Challenge Profile / NA
cannabisgooner#22222
Latest Riot challenge data cached by Lolytics.
Updated 1d ago
7,370
Challenge crystal
Gold
Overall challenge tier

276
276 cached rows
May 12
Riot payload refresh
Challenge Progress
Earned and progressed challenges
276 cached challenges

In Delightful Agony: 2023
Top 0% | 14
14

Ladder threshold

Overwhelming Presence
#183,101 | Top 0.9% | 4
#152,521

Ladder placement

Immediate Immobilization: 2023
#-360,738 | Top 7% | 3,639
#1

Ladder placement

Farm Champs Not Minions: 2024 Split 2
Top 4.3% | 2,151
Get Takedowns in ARAM

The Jukes!
#-479,671 | Top 9.3% | 1,714
#1

Ladder placement

2024 Seasonal: Split 2
Top 1.3% | 670
Earn progress from challenges in the 2024 Seasonal: Split 2 group

Stun n Gun: 2024 Split 2
Top 4.4% | 357
Immobilize then takedown an enemy with an ally

Breakable: 2023
#-411,613 | Top 7.9% | 310
#1

Ladder placement

The Fire Rises: 2024 Split 2
Top 6.5% | 154
Collect Infernal Cinders

Incredible Value
#-198,429 | Top 3.8% | 68
#1

Ladder placement

DPS Threat
#-645,330 | Top 12.5% | 67
#1

Ladder placement

Nullify the Void: 2024 Split 2
Top 4.4% | 64
Takedown Void Monsters

Nice Try: 2024 Split 2
Top 6.3% | 62
Kill enemies under your own turret

Got Your Back: 2023
#-199,293 | Top 3.8% | 56
#1

Ladder placement

Gets The Wurm
#-392,671 | Top 7.6% | 55
#1

Ladder placement

Wurm Fishing: 2024 Split 1
Top 2.6% | 50
50

Ladder threshold

Global Defense System
#-522,509 | Top 10.1% | 48
#1

Ladder placement

Rise Above the Rest: 2023
#-396,847 | Top 7.7% | 20
#1

Ladder placement

Comeback Kids
Top 3.3% | 12
Win after being down 15 kills

Darkness Distributor: 2024 Split 2
Top 3% | 12
Takedown the most wards in a game

Lightning Round
#1,049,775 | Top 5.1% | 8
#1,049,775

Ladder placement

Open Victory
Top 7.3% | 7
Win with an open nexus

Death Fears Me: 2023
#-601,914 | Top 11.6% | 5
#1

Ladder placement

Made My Mark: 2023
Top 9.6% | 4
Win after being down 15 kills

Can't Touch This
Top 1% | 4
Win without being killed by an enemy

Objective Secured: 2023
Top 2% | 1
1

Ladder threshold

Field Medic
Top 2.8% | 968,593
Effectively heal or shield allies

Do These Things Have Souls?
Top 5.5% | 68,049
Kill minions

Dinner's Ready
Top 4.5% | 1,691
Take Turret Plates

Darkness is Everywhere
Top 6.1% | 1,616
Take down wards

Insec-urity Breach
Top 4.2% | 1,039
Knock back enemies to your team and get a takedown

2023 Seasonal
Top 7.9% | 970
Earn progress from challenges in the 2023 Seasonal group

Determination
Top 6.3% | 870
Earn progress from challenges in the Monster Hunter, Steadfast, and Symbiosis groups

Steadfast
Top 8.1% | 320
Earn progress from challenges in the Steadfast group

Strategy
Top 5% | 305
Earn progress from challenges in the Strategy group

Visionary
Top 5.2% | 185
Earn progress from challenges in the Visionary group

Top Performer
Top 5% | 163
Earn S- grades or higher

Ward Ward-en
Top 5.8% | 152
Protect wards

Mystic
Top 5.1% | 140
Earn progress from challenges in the Mystic group

Dancing Shoes
Top 5.4% | 98
Dodge five skillshots within eight seconds

No Capstone Unturned
Top 8.4% | 46
Reach Gold tier on Capstones

Death Incarnate
Top 2.3% | 28
Take down 12 champions within 15 minutes

Top Performer: 2024 Split 2
Top 2.9% | 26
Earn S- grade or higher

Inspiring
Top 15.4% | 25
Obtain <em>support champions</em>

Multi-Weapon Master
Top 4.7% | 21
Win with <em>different mythic items</em>

Trust Nothing But Me: 2023
Top 2.7% | 15
Get an assist streak of 12+ without dying

Forever Triumphant
Top 1.5% | 8
End season splits ranked Gold or higher

Victorious Regalia
Top 5.6% | 4
Collect <em>victorious champion skins</em>

Draconic Extinction
Top 12.4% | 2
Kill two Elder Dragons in a single game

Can of Wurms
Top 13.8% | 1
Kill three Barons in a single game

Get Paid, and Get Out
Top 8.1% | 6,058,787
Earn gold

Ability Abuse
Top 8.9% | 119,663
Use Abilities

Everyone Pays!
Top 7% | 100,762
Earn bounty gold

Immediate Immobilization
Top 8.5% | 12,201
Immobilize enemies

Team Takedown
Top 7.6% | 6,359
Get picks with at least one ally

Little Inanimate Spies
Top 6.9% | 5,846
Place Stealth Wards

Above-Average Assistance
Top 7% | 5,261
Get Assists

Hard Day's Killin'
Top 8.3% | 2,994
Get Kills

Stun n Gun
Top 5.9% | 2,400
Immobilize then take down an enemy with an ally

EXPERTISE
Top 6.9% | 2,215
EXPERTISE capstone

VETERANCY
Top 6.7% | 1,500
VETERANCY capstone

Medal of Honor
Top 8.4% | 1,255
Earn progress from challenges in the Executioner, Commando, Resourceful, and Mystic groups

IMAGINATION
Top 7.5% | 1,210
IMAGINATION capstone

Go Where You Please
Top 7.8% | 1,107
Tank three immobilizing effects in a fight and survive

Turret Toppler
Top 8.5% | 1,055
Destroy turrets

Brush Fanatic
Top 9% | 861
Get takedowns with an ally after hiding in brush for 3+s

Captain
Top 8.4% | 825
Earn progress from challenges in the Strategy, Demolition, Synergy, and Team Spirit groups

ARAM Authority
Top 8.7% | 805
Earn progress from challenges in the ARAM Warrior, ARAM Finesse, and ARAM Champion groups

Give 'em Shell, Shelly
Top 6% | 760
Take turrets with Rift Herald

Might
Top 6.4% | 700
Earn progress from challenges in the Flair, Behemoth, Slayer, and Predator groups

No Quarter
Top 7.2% | 666
Kill champions under their own turret

Snow Day
Top 7.6% | 607
Hit snowballs on champions

Master of the Rift
Top 9.2% | 574
Play Summoner's Rift Games

Lizard Hunting
Top 6.2% | 573
Take down Dragons

Ascendant
Top 8.3% | 550
Earn progress from challenges in the Domination, Unrivaled, and Perfection groups

Nice Try
Top 7.8% | 375
Kill enemies under your own turret

Mastermind
Top 6.4% | 365
Earn progress from challenges in the Cornerstone and Visionary groups

Making the Dream Work
Top 8.9% | 350
Get a takedown with your entire team

Executioner
Top 8.6% | 330
Earn progress from challenges in the Executioner group

Killing Spree Spree
Top 8.8% | 316
Get killing sprees

ARAM Champion
Top 7.5% | 315
Earn progress from challenges in the ARAM Champion group

Resourceful
Top 8.6% | 305
Earn progress from challenges in the Resourceful group

Commando
Top 7% | 300
Earn progress from challenges in the Commando group

Monster Hunter
Top 13.6% | 270
Earn progress from challenges in the Monster Hunter group

2024 Seasonal: Split 1
Top 3.8% | 270
Earn progress from challenges in the 2024 Seasonal: Split 1 group

ARAM Warrior
Top 10.9% | 265
Earn progress from challenges in the ARAM Warrior group

Champion
Top 17.8% | 230
Earn progress from challenges in the Champion group

Damage Dispenser
Top 8% | 229
Deal over 700 Damage Per Minute

Magnum Opus
Top 4.5% | 220
Earn progress from challenges in the Magnum Opus group

Flair
Top 9.2% | 220
Earn progress from challenges in the Flair group

Synergy
Top 8.1% | 205
Earn progress from challenges in the Synergy group

Movin' On Up
Top 5.6% | 189
Win ranked games in Solo/Duo or Flex queue

Wurm Fishing
Top 8.5% | 182
Take down Barons

Adept
Top 8.2% | 180
Earn progress from challenges in the Adept group

Arena Brawler
Top 5.1% | 170
Deal the most damage to champions in the game

Domination
Top 8.4% | 160
Earn progress from challenges in the Domination group

Baron Power Play
Top 8.5% | 147
Generate 2500 gold advantage with Baron Buff

Outmanned, Never Outgunned: 2023
Top 7.5% | 143
Secure kills while outnumbered

Slayer
Top 6.6% | 140
Earn progress from challenges in the Slayer group

Symbiosis
Top 11% | 140
Earn progress from challenges in the Symbiosis group

Unrivaled
Top 6.8% | 140
Earn progress from challenges in the Unrivaled group

KDA Player
Top 4.8% | 137
Get a KDA over 3 in Solo/Duo Queue

The Brush Has Eyes
Top 8.1% | 132
Finish a game up 20% Vision Score

Perfection
Top 8.7% | 130
Earn progress from challenges in the Perfection group

Support Subsidy
Top 3.6% | 110
Fully complete your support quest in 14 minutes

Support Diff
Top 2.9% | 102
Win games as a Support

Golden
Top 6.8% | 97
Have more than 450 gold per minute in a game

Flawless Ace
Top 6.7% | 95
Ace the enemy team with no allied deaths

Behemoth
Top 8.1% | 95
Earn progress from challenges in the Behemoth group

Team Spirit
Top 6.9% | 90
Earn progress from challenges in the Team Spirit group

Alcove Gaming
Top 5.7% | 87
Take down opponents in the alcove

Shoddy Construction
Top 7.1% | 85
Take down the first turret

Cornerstone
Top 3.1% | 80
Earn progress from challenges in the Cornerstone group

Lane Domination
Top 7.5% | 76
Be up 20% gold and XP at 14min

Shattered Plates
Top 6.9% | 65
Destroy turrets before plates fall

Lane Command
Top 8.6% | 62
Be up 20% gold and XP at 7min

Bloodcrazed
Top 7.5% | 60
Get First Bloods

Legendary Arms: 2024 Split 1
Top 3.1% | 57
Win Games with <em>different Legendary Items</em>

Target Selection
Top 8.1% | 54
Take down junglers near a damaged Epic Monster

Pain Prescriber
Top 6% | 53
Deal the most damage to champions in the game

Level 1 Fiesta
Top 6.8% | 50
Get takedowns before jungle camps spawn

Incandescent
Top 17.8% | 43
Obtain <em>mage champions</em>

Soul Sweep
Top 7.9% | 40
Claim Dragon Souls 4-0

Uninhibited
Top 10.5% | 31
Win after losing an inhibitor

All Random All Flawless
Top 7.4% | 31
Earn S grades or higher

The Brush Has Eyes: 2024 Split 1
Top 4.4% | 26
End the game with 20% more vision score than your role opponent

Lethal Efficiency
Top 4.4% | 21
Kill 80 minions within 10 minutes

Can't Miss
Top 5.8% | 19
Land 20 skillshots before seven minutes

Ingenious
Top 16.4% | 18
Obtain <em>marksman champions</em>

Not Even a Scratch
Top 7.4% | 17
Take 10k damage in a fight and survive

The Wall
Top 4.7% | 16
Take 10k damage in a fight and survive

Unkillable Demon King
Top 9.4% | 10
Win games without dying and at least 30% kill participation

No Loyalty Among Dragons
Top 9.5% | 8
Take Elder Dragons when enemy has the Dragon Soul

ARAM Legend
Top 5.9% | 6
Go Legendary

Ladder Climber
Top 5.5% | 4 / 9
Earn rank in Solo/Duo Queue

Immortal
Top 7.6% | 3
Win a game with more than eight kills without dying

Who Needs 'Em
Top 20% | 3
Win a game despite an AFK teammate

Team Diff
Top 6.4% | 3
Score aces between minion spawn and 15 minutes

Prodigy
Top 11.5% | 2
Become Legendary within 15 minutes

PENTAKIIIIIIIIL!!
Top 4.1% | 2
Get Pentakills

Right Under Their Noses: 2024 Split 1
Top 4.7% | 1
Recall while unseen by a nearby champion

Wise Master
Top 18.6% | 578,124 / 900,000
Earn Mastery Points

One-Trick
Top 19% | 56,673 / 110,000
Gain Mastery Points on a single champion

It was a... Near-Hit
Top 9.8% | 9,064 / 21,600
Dodge skillshots

Another Day, Another Bullseye
Top 9.4% | 6,059 / 15,000
Hit skillshots on champions

Farm Champs Not Minions
Top 8.9% | 5,385 / 12,500
Get Takedowns

TEAMWORK
Top 9.8% | 1,810 / 2,100
TEAMWORK capstone

Solo Bolo
Top 10.4% | 720 / 1,000
Get solo kills

No Hiding
Top 10% | 482 / 650
Kill enemies near one of their turrets

Never Tell Me the Odds
Top 11.6% | 472 / 540
Get kills while outnumbered

Cleverness and Creativity
Top 13.2% | 335 / 400
Earn progress from challenges in the Style, Innovation, and Tactician groups

Multikill Madness
Top 11% | 278 / 300
Get Multikills

Goodbye to the Darkness!
Top 8.2% | 246 / 500
Place Control Wards

That Was Close
Top 4.2% | 222 / 375
Save an ally with a heal or shield

I Shall Feast: 2023
Top 8.7% | 180 / 200
Kill jungle monsters in the enemy jungle

Innovation
Top 17.8% | 140 / 175
Earn progress from challenges in the Innovation group

Overachiever
Top 10.3% | 125 / 135
Earn progress from challenges in the Overachiever group

ARAM Finesse
Top 10.2% | 120 / 140
Earn progress from challenges in the ARAM Finesse group

Shell Collecting
Top 8.2% | 106 / 180
Take down Rift Heralds

Darkness Distributer
Top 8.3% | 102 / 120
Take down the most wards in the game

Mid Diff
Top 3.9% | 93 / 100
Win games as Mid

NA-RAM
Top 9.2% | 93 / 150
Win games

Splitpush Strategy
Top 8.3% | 91 / 180
Take side lane turrets solo without dying

Been Here a While
Top 16.8% | 82 / 125
Increase your summoner level

A Drake and a Hard Place
Top 11% | 74 / 120
Kill opponents with help from an Epic monster

Can Run, Can't Hide: 2023
Top 8.1% | 72 / 90
Kill enemies near one of their turrets

Leading by Example
Top 4.2% | 72 / 90
Get an assist streak of 12+ without dying

Dragon On Too Long
Top 9.1% | 70 / 75
Take down first dragon before eight minutes

On Another Level
Top 12.3% | 70 / 75
Be up three more levels than role opponent at any point

Tactician
Top 9.8% | 65 / 80
Earn progress from challenges in the Tactician group

All-Seeing
Top 3.8% | 62 / 75
Have over 2 vision score per minute

Demolition
Top 6.9% | 60 / 80
Earn progress from challenges in the Demolition group

Icon of the Rift
Top 15.7% | 58 / 100
Obtain Summoner Icons

Style
Top 10.6% | 55 / 65
Earn progress from challenges in the Style group

Bouncer
Top 8.7% | 52 / 80
Get the highest crowd control score in the game

Not Even Close
Top 27% | 44
Survive champion combat on single digit health

Challenges are Forever
Top 9.3% | 42 / 75
Reach Diamond tier on different challenges

Entitled
Top 9% | 42 / 45
Earn titles from challenges

All Random All Champions
Top 5.5% | 34 / 50
Earn an S- grade on <em>different champions</em>

Aggressive Positioning
Top 9.3% | 32 / 35
Get multikills after flashing towards an enemy

Farm Champs not Camps
Top 7.5% | 30 / 75
As jungler, get kills on laners before 10 minutes

Two Shells are Better Than One
Top 10.6% | 30 / 50
Take both Rift Heralds in a game

Indomitable
Top 19.9% | 22 / 30
Obtain <em>fighter champions</em>

Legendary Legend
Top 11.3% | 21
Become Legendary

Bad Medicine
Top 10% | 21 / 45
Kill enemies recently healed by a health pack

One Stone
Top 9.6% | 21
Kill two players with one ability cast

Invisible
Top 18.5% | 20 / 25
Obtain <em>assassin champions</em>

Blink and You'll Miss It
Top 6.8% | 19 / 40
Kill champions from full health in 1.5 seconds

Fashionista
Top 8.2% | 18 / 30
Collect chromas

Double Down
Top 5.1% | 18 / 20
Get double kills

Invulnerable
Top 25.4% | 16 / 20
Obtain <em>tank champions</em>

Support Subsidy: 2024 Split 1
Top 2% | 15 / 25
Fully complete your support quest within 14 minutes

Outplaying the Odds
Top 4.2% | 12 / 14
Get kills while outnumbered

Clutch Steal
Top 7.1% | 10 / 25
Steal Epic monsters

TY for Leash
Top 7.2% | 10 / 20
Steal an Epic Monster without Smite

Let's Make This Quick
Top 19.3% | 6
Destroy the enemy nexus in less than 15 minutes

Plant Tactics
Top 10.5% | 6
Use blast cones to escape enemies

Winhibitors
Top 15.9% | 5
Destroy all three enemy inhibitors in under 25 minutes

Right Under Their Noses
Top 9.2% | 4
Recall while unseen by a nearby champion

Happy Feet
Top 12.7% | 3
Dance with the Rift Herald in the enemy base

Ward Hunter
Top 7.5% | 3
Destroy 10 wards before 20 minutes

Dragon's Fury
Top 8.7% | 2
Get multikills with Elder Dragon

Epic Steal
Top 5.3% | 1
Steal two Epic Monsters in one game

ARAM Eradication
Top 11.5% | 1
Get Pentakills

Solo Carry
Top 10.2% | 1
Deal 40%+ of your team's champion damage

Free Money
Top 12.3% | 4,847 / 5,000
Kill minions

COLLECTION
Top 21.1% | 635 / 700
COLLECTION capstone

Sage
Top 12.4% | 190 / 350
Earn progress from challenges in the Guru, Virtuoso, and Ace groups

Connoisseur
Top 16.3% | 130 / 150
Earn progress from challenges in the Connoisseur group

Predator
Top 13.5% | 110 / 150
Earn progress from challenges in the Predator group

Ace
Top 9.4% | 85 / 100
Earn progress from challenges in the Ace group

Spice of Life
Top 19.3% | 74 / 75
Obtain <em>champions</em>

Jack of All Champs
Top 4.5% | 71 / 75
Win games with <em>different champions</em>

Guru
Top 18.7% | 70 / 100
Earn progress from challenges in the Guru group

Perfect Aim: 2023
Top 8.4% | 69 / 100
Hit snowballs on champions

Treasure
Top 24.8% | 55 / 70
Earn progress from challenges in the Treasure group

Buff Burglar
Top 11.1% | 45 / 120
Take enemy buffs

Superior Supporting
Top 5.6% | 42 / 50
Finish your support quest faster than your opponent

Emotive
Top 26.1% | 34 / 40
Obtain emotes

Target Secured
Top 11.1% | 29 / 38
Secure Epic Monsters with the enemy jungler nearby

Masterful Performance
Top 10% | 25 / 30
Reach Masters tier on different challenges

Fashion Forward
Top 20.1% | 21 / 30
Collect champion skins

Perfectionist
Top 4.3% | 21 / 30
Earn an S+ grade with <em>different champions</em>

Get On My Level
Top 12.8% | 9 / 10
Get takedowns after gaining an early level advantage

Captain Jack
Top 6.7% | 9
Cleanse an immobilizing effect within 0.25s

Dedicated Master: 2024 Split 3
Top 6.5% | 9 / 10
Earn Mastery Milestones

Ward Skin Collector
Top 19.6% | 7 / 10
Obtain ward skins

Nowhere is Safe
Top 16.8% | 6
Take down champions in their fountain

Always On Time: 2024 Split 1
Top 4.2% | 5 / 7
Kill Epic Monsters within 30 seconds of spawn

Flame Horizon
Top 10.5% | 5
Win games with 100+ more CS than role opponent

Rapid Demolition
Top 10.8% | 4 / 5
Take the first turret before 5 min

Free Ticket to Base
Top 8.6% | 3
Execute to turret before 10 min

Stacks on Stacks on Stacks
Top 5.3% | 2
Fully stack Mejai's before 20 minutes

Damage Sponge
Top 11.8% | 1
In one fight, get kills while tanking all five enemies and survive

Dine In
Top 11.4% | 2,176 / 4,000
Kill jungle monsters in your jungle

Dine Out
Top 12.4% | 353 / 600
Kill jungle monsters in the enemy jungle

Scuttle Along Now
Top 14.4% | 132 / 150
Kill scuttle crabs

Bot Diff
Top 7% | 49 / 50
Win games as a Bot Carry

Fun with Friends
Top 16% | 44 / 75
Play games with a group

Fashionably Late
Top 5.7% | 31 / 50
Get a takedown after teleporting to a >4 champion fight

Sparkles & Fireworks: 2024 Split 2
Top 4.2% | 21 / 30
Participate in Fistbumps in matchmade games

2024 Seasonal: Split 3
Top 13.6% | 20 / 40
Earn points from challenges in the 2024 Seasonal: Split 3 group

Always On Time
Top 11.1% | 19 / 25
Kill Epic Monsters within 30 seconds of spawn

Fancy Garb
Top 14.8% | 11 / 25
Collect <em>epic champion skins</em>

I've Got You!
Top 5.5% | 11 / 12
Save an ally with a heal or shield

Invincible
Top 9.8% | 8 / 10
Win without dying with <em>different champions</em>

Go Shelly Go!
Top 9.1% | 8 / 20
Take 2 turrets with the same Rift Herald

Active Participant
Top 8.1% | 7 / 10
Have over 90% Kill Participation in games

Cream of the Crop
Top 3.5% | 5 / 6
Deal the most damage to champions in the game

Crab Wrangler
Top 11% | 4 / 10
Take both of the first scuttle crab spawns

The Most Dangerous Game
Top 11.5% | 4 / 5
As jungler, kill the enemy jungler in their jungle before 10 minutes

Legendary Wardrobe
Top 14% | 3 / 7
Collect <em>legendary champion skins</em>

Ten Minute Turret
Top 7.9% | 2 / 5
Destroy the first turret in under 10 minutes

Three Buffed
Top 10.3% | 2 / 5
Take 3 of the first 4 buff camps

Meat Shield
Top 14.6% | 1
Win the game taking at least 35% of team damage

Top Diff
Top 11.6% | 29 / 30
Win games as Top

Brave The Darkness: 2023
Top 11.2% | 18 / 25
Place Control Wards

Jungle Diff
Top 11.4% | 13 / 30
Win games as a Jungler

Synchronicity
Top 19.2% | 10 / 15
Earn progress from challenges in the Synchronicity group

Master Yourself
Top 14.2% | 6 / 15
Earn Mastery 5 on <em>different champions</em>

No Hiding: 2024 Split 3
Top 9.7% | 6 / 8
Kill enemies near one of their own turrets

Vintage Look
Top 26.5% | 3 / 10
Collect <em>legacy champion skins</em>

Same Penta, Different Champ
Top 8.2% | 2 / 3
Get a Pentakill with <em>different champions</em>

That Drip
Top 35.5% | 1 / 2
Collect many skins for a single champion

All Random All Champs: 2024 Split 1
Top 7.6% | 1 / 2
Earn an S- grade on <em>different champions</em>

Crab Wrangler: 2024 Split 1
Top 5.5% | 1 / 3
Take both of the first scuttle crab spawns

Malfunction
Top 32.6% | 1 / 5
Win games

Master Mage (Legacy)
Top 13.5% | 1 / 5
Get Mastery 7 on different <em>mages</em>

Robo Recall
Top 100% | 18 / 50
Get kills

Alliance
Top 100% | 15 / 30
Earn progress from challenges in the Clash, Synchronicity, Harmony, and Globetrotter groups

Machine-Hunting Mercenary
Top 100% | 5 / 15
Earn progress from challenges in the Machine-Hunting Mercenary group

Virtuoso
Top 100% | 5 / 15
Earn progress from challenges in the Virtuoso group

Arena Champion Ocean
Top 100% | 3 / 8
Play Arena games with <em>different champions</em>

Adapt to All Situations
Top 100% | 1 / 3
Place first in Arena games with <em>different champions</em>

Protean Override
Top 100% | 1 / 3
Win games with <em>different champions</em>

Master the Enemy (Legacy)
Top 100% | 1 / 3
Earn Mastery 7 on <em>different champions</em>