0Challenge Profile / EUW
vrbi#777
Latest Riot challenge data cached by Lolytics.
Updated 73d ago
10,730
Challenge crystal
Platinum
Overall challenge tier
276
276 cached rows
May 9
Riot payload refresh
Challenge Progress
Earned and progressed challenges
276 cached challenges
Ability Abuse
#-66,135 | Top 1.3% | 609,015
#1
Ladder placement
Farm Champs not Camps
#-35,151 | Top 0.7% | 628
#1
Ladder placement
Blink and You'll Miss It
#29,528 | Top 0.1% | 449
#29,528
Ladder placement
One Stone
#36,028 | Top 0.1% | 247
#36,028
Ladder placement
Gets The Wurm
#-166,761 | Top 3.2% | 132
#1
Ladder placement
Clean Clears
#57,930 | Top 0.2% | 131
#57,930
Ladder placement
A Honeyfruit a Day: 2024 Split 3
Top 9.6% | 22,394
Restore health through map-based healing sources
Farm Champs Not Minions: 2024 Split 2
Top 4.8% | 2,585
Get Takedowns in ARAM
The Jukes!
#-984,175 | Top 14.6% | 2,303
#1
Ladder placement
No Quarter
#-267,011 | Top 3.9% | 2,108
#1
Ladder placement
Never Tell Me the Odds
#-206,453 | Top 3% | 1,972
#1
Ladder placement
Killing Spree Spree
#-373,671 | Top 5.5% | 1,041
#1
Ladder placement
Multikill Madness
#-243,871 | Top 3.6% | 973
#1
Ladder placement
Damage Dispenser
#-316,538 | Top 4.7% | 656
#1
Ladder placement
Strategy
Top 1.6% | 500
Earn progress from challenges in the Strategy group
Golden
Top 3.3% | 417
Have more than 450 gold per minute in a game
Ward Ward-en
#-351,912 | Top 5.2% | 378
#1
Ladder placement
On Another Level
#-239,004 | Top 3.5% | 245
#1
Ladder placement
Jungle Diff
#-114,621 | Top 3.3% | 243
#1
Ladder placement
Pain Prescriber
#-222,497 | Top 3.3% | 192
#1
Ladder placement
Target Selection
#-312,764 | Top 4.6% | 187
#1
Ladder placement
Dancing Shoes
Top 6.4% | 143
143
Ladder threshold
Incredible Value
#-417,306 | Top 6.2% | 142
#1
Ladder placement
The Fire Rises: 2024 Split 2
Top 9.9% | 108
Collect Infernal Cinders
Global Defense System
#-1,089,354 | Top 16.2% | 106
#1
Ladder placement
Can't Miss
#-180,767 | Top 2.7% | 102
#1
Ladder placement
Nullify the Void: 2024 Split 2
Top 6.5% | 55
Takedown Void Monsters
Meat Shield
#-117,830 | Top 1.8% | 53
#1
Ladder placement
DPS Threat
#-1,074,444 | Top 16% | 52
#1
Ladder placement
Whose Lane is it Anyway
#38,686 | Top 0.1% | 17
#38,686
Ladder placement
Prodigy
Top 7.2% | 15
Become Legendary within 15 minutes
Open Victory
Top 11.2% | 12
Win with an open nexus
Lightning Round
#-415,718 | Top 6.3% | 11
#1
Ladder placement
It Has "Ultimate" In the Name!
#-466,907 | Top 6.9% | 9
#1
Ladder placement
Lane Domination: 2024 Split 3
Top 6.5% | 8
Be up 20% gold and XP at 14min
Global Defense System: 2024 Split 3
Top 8.4% | 7
Have a control ward in enemy jungle for 65+% of the game
One Stone: 2024 Split 3
Top 3.7% | 6
Kill two players with the same ability cast
Dragon Hunt
#-209,848 | Top 3.2% | 5
#1
Ladder placement
Overwhelming Presence
#933,925 | Top 3.6% | 4
#933,925
Ladder placement
Double Decimation
Top 3.1% | 1
Get two Pentakills in a single game
Get Paid, and Get Out
Top 8.5% | 11,444,049
Earn gold
One-Trick
Top 7% | 602,768
Gain Mastery Points on a single champion
Everyone Pays!
Top 7.4% | 230,767
Earn bounty gold
Do These Things Have Souls?
Top 8.8% | 84,902
Kill minions
Team Takedown
Top 7.9% | 10,093
Get picks with at least one ally
Hard Day's Killin'
Top 7% | 8,598
Get Kills
EXPERTISE
Top 4.4% | 3,530
EXPERTISE capstone
Solo Bolo
Top 4% | 2,906
Get solo kills
Go Where You Please
Top 7.9% | 2,002
Tank three immobilizing effects in a fight and survive
Medal of Honor
Top 6.7% | 1,770
Earn progress from challenges in the Executioner, Commando, Resourceful, and Mystic groups
Dinner's Ready
Top 7.4% | 1,736
Take Turret Plates
Darkness is Everywhere
Top 9.6% | 1,594
Take down wards
Might
Top 3.5% | 1,575
Earn progress from challenges in the Flair, Behemoth, Slayer, and Predator groups
Scuttle Along Now
Top 2.5% | 1,439
Kill scuttle crabs
Ascendant
Top 5.9% | 1,065
Earn progress from challenges in the Domination, Unrivaled, and Perfection groups
Captain
Top 5.7% | 1,050
Earn progress from challenges in the Strategy, Demolition, Synergy, and Team Spirit groups
Insec-urity Breach
Top 7% | 1,014
Knock back enemies to your team and get a takedown
Determination
Top 9.5% | 925
Earn progress from challenges in the Monster Hunter, Steadfast, and Symbiosis groups
Master of the Rift
Top 9.1% | 844
Play Summoner's Rift Games
Cleverness and Creativity
Top 5.4% | 740
Earn progress from challenges in the Style, Innovation, and Tactician groups
Buff Burglar
Top 2.4% | 727
Take enemy buffs
Nice Try
Top 7.2% | 645
Kill enemies under your own turret
Executioner
Top 7.1% | 600
Earn progress from challenges in the Executioner group
Making the Dream Work
Top 8.7% | 564
Get a takedown with your entire team
Predator
Top 1.7% | 450
Earn progress from challenges in the Predator group
2024 Seasonal: Split 2
Top 7.9% | 445
Earn progress from challenges in the 2024 Seasonal: Split 2 group
Monster Hunter
Top 8.2% | 420
Earn progress from challenges in the Monster Hunter group
Champion
Top 15.8% | 420
Earn progress from challenges in the Champion group
2024 Seasonal: Split 3
Top 6.6% | 420
Earn points from challenges in the 2024 Seasonal: Split 3 group
Slayer
Top 5.3% | 385
Earn progress from challenges in the Slayer group
ARAM Warrior
Top 6.3% | 385
Earn progress from challenges in the ARAM Warrior group
Movin' On Up
Top 6.2% | 383
Win ranked games in Solo/Duo or Flex queue
Flair
Top 5.5% | 355
Earn progress from challenges in the Flair group
Unrivaled
Top 5.1% | 335
Earn progress from challenges in the Unrivaled group
Innovation
Top 5.7% | 325
Earn progress from challenges in the Innovation group
Domination
Top 6.7% | 320
Earn progress from challenges in the Domination group
A Drake and a Hard Place
Top 5.2% | 298
Kill opponents with help from an Epic monster
Target Secured
Top 3% | 291
Secure Epic Monsters with the enemy jungler nearby
Steadfast
Top 12.5% | 280
Earn progress from challenges in the Steadfast group
Perfection
Top 7% | 230
Earn progress from challenges in the Perfection group
Top Performer
Top 7.8% | 217
Earn S- grades or higher
Visionary
Top 8.2% | 210
Earn progress from challenges in the Visionary group
Wurm Fishing
Top 8.7% | 204
Take down Barons
Flawless Ace
Top 6.5% | 198
Ace the enemy team with no allied deaths
Baron Power Play
Top 8.8% | 191
Generate 2500 gold advantage with Baron Buff
Alcove Gaming
Top 5% | 161
Take down opponents in the alcove
Tactician
Top 5.5% | 160
Earn progress from challenges in the Tactician group
Mid Diff
Top 3.9% | 149
Win games as Mid
Mystic
Top 8% | 145
Earn progress from challenges in the Mystic group
Behemoth
Top 5.6% | 145
Earn progress from challenges in the Behemoth group
Bloodcrazed
Top 7.3% | 139
Get First Bloods
Spice of Life
Top 13% | 132
Obtain <em>champions</em>
Lane Domination
Top 6.9% | 131
Be up 20% gold and XP at 14min
Legendary Legend
Top 4.9% | 107
Become Legendary
Aggressive Positioning
Top 4.9% | 96
Get multikills after flashing towards an enemy
Lane Command
Top 7.2% | 93
Be up 20% gold and XP at 7min
Soul Sweep
Top 9.1% | 83
Claim Dragon Souls 4-0
The Most Dangerous Game
Top 1% | 81
As jungler, kill the enemy jungler in their jungle before 10 minutes
Incandescent
Top 15.8% | 58
Obtain <em>mage champions</em>
Uninhibited
Top 8.1% | 55
Win after losing an inhibitor
Not Even a Scratch
Top 7.8% | 53
Take 10k damage in a fight and survive
Indomitable
Top 13.8% | 51
Obtain <em>fighter champions</em>
No Capstone Unturned
Top 12.6% | 49
Reach Gold tier on Capstones
Invisible
Top 13.6% | 39
Obtain <em>assassin champions</em>
Death Incarnate
Top 3.7% | 39
Take down 12 champions within 15 minutes
Flame Horizon
Top 2.9% | 37
Win games with 100+ more CS than role opponent
Invulnerable
Top 15.9% | 34
Obtain <em>tank champions</em>
Inspiring
Top 20.1% | 29
Obtain <em>support champions</em>
Ingenious
Top 17.1% | 26
Obtain <em>marksman champions</em>
Nice Try: 2024 Split 2
Top 12% | 9
Kill enemies under your own turret
Team Diff
Top 5.5% | 7
Score aces between minion spawn and 15 minutes
ARAM Eradication
Top 5.3% | 6
Get Pentakills
Dragon's Fury
Top 6.3% | 5
Get multikills with Elder Dragon
Victorious Regalia
Top 8.7% | 4
Collect <em>victorious champion skins</em>
PENTAKIIIIIIIIL!!
Top 4.1% | 4
Get Pentakills
Ladder Climber
Top 2.1% | 3 / 9
Earn rank in Solo/Duo Queue
Can of Wurms
Top 21.4% | 2
Kill three Barons in a single game
Draconic Extinction
Top 18.9% | 2
Kill two Elder Dragons in a single game
Wise Master
Top 15.1% | 1,082,024
Earn Mastery Points
Dine In
Top 2.3% | 32,978
Kill jungle monsters in your jungle
Immediate Immobilization
Top 13.3% | 9,360
Immobilize enemies
Dine Out
Top 2.9% | 6,972
Kill jungle monsters in the enemy jungle
Above-Average Assistance
Top 11% | 6,310
Get Assists
Little Inanimate Spies
Top 11% | 4,003
Place Stealth Wards
TEAMWORK
Top 8% | 2,340
TEAMWORK capstone
VETERANCY
Top 10.3% | 2,250
VETERANCY capstone
IMAGINATION
Top 9.2% | 1,650
IMAGINATION capstone
Turret Toppler
Top 13.4% | 1,192
Destroy turrets
Lizard Hunting
Top 9.3% | 967
Take down Dragons
Give 'em Shell, Shelly
Top 9.3% | 895
Take turrets with Rift Herald
Brush Fanatic
Top 14% | 888
Get takedowns with an ally after hiding in brush for 3+s
ARAM Authority
Top 9.9% | 810
Earn progress from challenges in the ARAM Warrior, ARAM Finesse, and ARAM Champion groups
Snow Day
Top 9.1% | 723
Hit snowballs on champions
Commando
Top 10.9% | 460
Earn progress from challenges in the Commando group
Fun with Friends
Top 9.2% | 374
Play games with a group
Resourceful
Top 13.5% | 365
Earn progress from challenges in the Resourceful group
Mastermind
Top 10.1% | 285
Earn progress from challenges in the Cornerstone and Visionary groups
KDA Player
Top 8.3% | 246
Get a KDA over 3 in Solo/Duo Queue
Shell Collecting
Top 6% | 230
Take down Rift Heralds
Magnum Opus
Top 7.5% | 200
Earn progress from challenges in the Magnum Opus group
Synergy
Top 12.6% | 185
Earn progress from challenges in the Synergy group
Ace
Top 6% | 180
Earn progress from challenges in the Ace group
The Brush Has Eyes
Top 12.3% | 169
Finish a game up 20% Vision Score
Overachiever
Top 10.2% | 165
Earn progress from challenges in the Overachiever group
Adept
Top 12.7% | 165
Earn progress from challenges in the Adept group
Always On Time
Top 2.3% | 151
Kill Epic Monsters within 30 seconds of spawn
Arena Brawler
Top 7% | 150
Deal the most damage to champions in the game
Team Spirit
Top 11% | 125
Earn progress from challenges in the Team Spirit group
Dragon On Too Long
Top 6.1% | 101
Take down first dragon before eight minutes
Style
Top 12.7% | 95
Earn progress from challenges in the Style group
Challenges are Forever
Top 7.4% | 92
Reach Diamond tier on different challenges
Stun n Gun: 2024 Split 2
Top 9.9% | 85
Immobilize then takedown an enemy with an ally
Shoddy Construction
Top 10.8% | 66
Take down the first turret
Entitled
Top 8.8% | 63
Earn titles from challenges
Level 1 Fiesta
Top 10.5% | 48
Get takedowns before jungle camps spawn
Three Buffed
Top 2.4% | 45
Take 3 of the first 4 buff camps
Get On My Level
Top 6.9% | 43
Get takedowns after gaining an early level advantage
Clutch Steal
Top 5.4% | 41
Steal Epic monsters
Fashionista
Top 7% | 34
Collect chromas
TY for Leash
Top 5.5% | 34
Steal an Epic Monster without Smite
Lethal Efficiency
Top 8.1% | 16
Kill 80 minions within 10 minutes
Plant Tactics
Top 9.6% | 13
Use blast cones to escape enemies
Who Needs 'Em
Top 29.8% | 8
Win a game despite an AFK teammate
No Loyalty Among Dragons
Top 14.7% | 7
Take Elder Dragons when enemy has the Dragon Soul
Comeback Kids
Top 13.6% | 5
Win after being down 15 kills
Right Under Their Noses
Top 10.7% | 5
Recall while unseen by a nearby champion
Double Ace
Top 9.7% | 3
Have both teams be aced in the same fight
Epic Steal
Top 3.9% | 2
Steal two Epic Monsters in one game
Wave Goodbye
Top 31.5% | 1
Kill 20 minions within 3 Seconds
It was a... Near-Hit
Top 11.5% | 9,074 / 21,600
Dodge skillshots
Another Day, Another Bullseye
Top 11.1% | 5,558 / 15,000
Hit skillshots on champions
Farm Champs Not Minions
Top 10.2% | 5,216 / 12,500
Get Takedowns
Free Money
Top 11.9% | 5,200 / 17,000
Kill minions
Stun n Gun
Top 16.6% | 1,583 / 2,250
Immobilize then take down an enemy with an ally
COLLECTION
Top 16.8% | 960 / 1,100
COLLECTION capstone
No Hiding
Top 12.3% | 496 / 650
Kill enemies near one of their turrets
Sage
Top 9.2% | 395 / 560
Earn progress from challenges in the Guru, Virtuoso, and Ace groups
Goodbye to the Darkness!
Top 12.7% | 322 / 500
Place Control Wards
ARAM Champion
Top 12.6% | 180 / 185
Earn progress from challenges in the ARAM Champion group
Connoisseur
Top 12.5% | 170 / 240
Earn progress from challenges in the Connoisseur group
Splitpush Strategy
Top 13.4% | 163 / 180
Take side lane turrets solo without dying
Power Pair
Top 5.2% | 149 / 150
Win with a premade party of two in a ranked queue
ARAM Finesse
Top 12.4% | 135 / 140
Earn progress from challenges in the ARAM Finesse group
Been Here a While
Top 22.2% | 111 / 125
Increase your summoner level
Guru
Top 13.1% | 110 / 160
Earn progress from challenges in the Guru group
NA-RAM
Top 10.8% | 83 / 150
Win games
Synchronicity
Top 9.1% | 70 / 80
Earn progress from challenges in the Synchronicity group
Icon of the Rift
Top 20.5% | 67 / 100
Obtain Summoner Icons
Not Even Close
Top 40.4% | 60
Survive champion combat on single digit health
Crab Wrangler
Top 6.5% | 48 / 75
Take both of the first scuttle crab spawns
Darkness Distributer
Top 12.3% | 46 / 120
Take down the most wards in the game
Emotive
Top 19.1% | 41 / 80
Obtain emotes
Bad Medicine
Top 12.1% | 40 / 45
Kill enemies recently healed by a health pack
Masterful Performance
Top 8.9% | 39 / 75
Reach Masters tier on different challenges
Fashion Forward
Top 17.9% | 35 / 75
Collect champion skins
Shattered Plates
Top 17.7% | 34 / 45
Destroy turrets before plates fall
All Random All Flawless
Top 12.8% | 11 / 20
Earn S grades or higher
All Random All Champs: 2024 Split 1
Top 3.8% | 7 / 12
Earn an S- grade on <em>different champions</em>
Let's Make This Quick
Top 27.9% | 5
Destroy the enemy nexus in less than 15 minutes
Unkillable Demon King
Top 20.7% | 5
Win games without dying and at least 30% kill participation
Forever Triumphant
Top 7.3% | 4
End season splits ranked Gold or higher
ARAM Legend
Top 12.3% | 4
Go Legendary
Immortal
Top 15.3% | 2
Win a game with more than eight kills without dying
It's My Jungle Now
Top 6.3% | 2
Before 10 minutes, take more of the opponent's jungle than them
Solo Carry
Top 13.3% | 2
Deal 40%+ of your team's champion damage
Damage Sponge
Top 5.4% | 2
In one fight, get kills while tanking all five enemies and survive
Nowhere to Hide
Top 9.3% | 1
Win with a 5-stack of <em>champs with 3+ global abilities</em>
Alliance
Top 14.9% | 230 / 620
Earn progress from challenges in the Clash, Synchronicity, Harmony, and Globetrotter groups
2024 Seasonal: Split 1
Top 12.2% | 95 / 135
Earn progress from challenges in the 2024 Seasonal: Split 1 group
Symbiosis
Top 20.8% | 90 / 100
Earn progress from challenges in the Symbiosis group
Treasure
Top 33.7% | 65 / 70
Earn progress from challenges in the Treasure group
Demolition
Top 22% | 45 / 50
Earn progress from challenges in the Demolition group
Sparkles & Fireworks: 2024 Split 2
Top 2.6% | 30 / 50
Participate in Fistbumps in matchmade games
Nowhere is Safe
Top 27.5% | 25
Take down champions in their fountain
Legendary Arms: 2024 Split 1
Top 11.4% | 23 / 25
Win Games with <em>different Legendary Items</em>
The Brush Has Eyes: 2024 Split 1
Top 10.9% | 12 / 15
End the game with 20% more vision score than your role opponent
Double Down
Top 8.2% | 12 / 14
Get double kills
Top Performer: 2024 Split 2
Top 8.4% | 8 / 11
Earn S- grade or higher
Crab Wrangler: 2024 Split 1
Top 3% | 7 / 10
Take both of the first scuttle crab spawns
Ward Skin Collector
Top 25.7% | 7 / 10
Obtain ward skins
Outplaying the Odds
Top 7.8% | 6 / 8
Get kills while outnumbered
Ten Minute Turret
Top 4.6% | 5 / 10
Destroy the first turret in under 10 minutes
Always On Time: 2024 Split 1
Top 6.5% | 4 / 7
Kill Epic Monsters within 30 seconds of spawn
Rapid Demolition
Top 12.8% | 3 / 5
Take the first turret before 5 min
Darkness Distributor: 2024 Split 2
Top 13% | 1
Takedown the most wards in a game
Stacks on Stacks on Stacks
Top 8.3% | 1
Fully stack Mejai's before 20 minutes
Harmony
Top 10.4% | 125 / 150
Earn progress from challenges in the Harmony group
Top Diff
Top 10.8% | 43 / 50
Win games as Top
Jack of All Champs
Top 14.8% | 33 / 50
Win games with <em>different champions</em>
Virtuoso
Top 14.3% | 30 / 45
Earn progress from challenges in the Virtuoso group
Champion Ocean: 2024 Split 3
Top 11.2% | 14 / 15
Win games with <em>different champions</em>
Fancy Garb
Top 18.3% | 10 / 25
Collect <em>epic champion skins</em>
All Random All Champions
Top 16.2% | 8 / 15
Earn an S- grade on <em>different champions</em>
Bouncer
Top 25.3% | 8 / 10
Get the highest crowd control score in the game
Perfectionist
Top 17.8% | 6 / 15
Earn an S+ grade with <em>different champions</em>
Support Subsidy
Top 20.8% | 6 / 12
Fully complete your support quest in 14 minutes
Wurm Fishing: 2024 Split 1
Top 12.7% | 5 / 9
Takedown Barons
Legendary Wardrobe
Top 17.3% | 3 / 7
Collect <em>legendary champion skins</em>
Dedicated Master: 2024 Split 3
Top 11.2% | 3 / 6
Earn Mastery Milestones
The Wall
Top 11.6% | 3
Take 10k damage in a fight and survive
That Drip
Top 27% | 2 / 3
Collect many skins for a single champion
Free Ticket to Base
Top 14.5% | 1
Execute to turret before 10 min
Pop Goes the Poro
Top 19.2% | 1
Cause a Poro to explode
Ward Hunter
Top 21.1% | 1
Destroy 10 wards before 20 minutes
Field Medic
Top 33% | 10,780 / 24,000
Effectively heal or shield allies
Fashionably Late
Top 17% | 19 / 20
Get a takedown after teleporting to a >4 champion fight
Bot Diff
Top 17.9% | 16 / 30
Win games as a Bot Carry
Cornerstone
Top 23.1% | 10 / 15
Earn progress from challenges in the Cornerstone group
Vintage Look
Top 35.8% | 8 / 10
Collect <em>legacy champion skins</em>
Player Diff
Top 7.7% | 6 / 10
Win games queued as Fill
I've Got You!
Top 9.8% | 5 / 6
Save an ally with a heal or shield
Invincible
Top 25.2% | 4 / 5
Win without dying with <em>different champions</em>
Leading by Example
Top 29.5% | 4 / 5
Get an assist streak of 12+ without dying
Go Shelly Go!
Top 28.4% | 3 / 5
Take 2 turrets with the same Rift Herald
Best Friends Forever
Top 20.1% | 3 / 5
Get wins with a premade of 5
Haute Couture
Top 14.5% | 1 / 2
Collect <em>ultimate champion skins</em>
Formal Attire
Top 20% | 1 / 3
Collect <em>mythic champion skins</em>
Same Penta, Different Champ
Top 13.1% | 1 / 3
Get a Pentakill with <em>different champions</em>
Master Tank (Legacy)
Top 14.2% | 1 / 3
Get Mastery 7 on different <em>tanks</em>
Master Assassin
Top 10.9% | 1 / 5
Get Mastery 10 on different <em>assassins</em>
Master Fighter (Legacy)
Top 16.9% | 1 / 5
Get Mastery 7 on different <em>fighters</em>
Master Assassin (Legacy)
Top 16.5% | 1 / 5
Get Mastery 7 on different <em>assassins</em>
Master Tank
Top 8.7% | 1 / 3
Get Mastery 10 on different <em>tanks</em>
Master Fighter
Top 10.8% | 1 / 5
Get Mastery 10 on different <em>fighters</em>
Cream of the Crop
Top 8.1% | 1 / 3
Deal the most damage to champions in the game
Active Participant
Top 18.8% | 1 / 5
Have over 90% Kill Participation in games
Master Yourself
Top 100% | 4 / 5
Earn Mastery 5 on <em>different champions</em>
Arena Champion Ocean
Top 100% | 4 / 8
Play Arena games with <em>different champions</em>
Master the Enemy
Top 100% | 2 / 3
Earn Mastery 10 on <em>different champions</em>
Master the Enemy (Legacy)
Top 100% | 2 / 3
Earn Mastery 7 on <em>different champions</em>
All-Seeing
Top 100% | 2 / 5
Have over 2 vision score per minute
Support Diff
Top 100% | 2 / 10
Win games as a Support
Adapt to All Situations
Top 100% | 2 / 3
Place first in Arena games with <em>different champions</em>
That Was Close
Top 100% | 1 / 5
Save an ally with a heal or shield
Superior Supporting
Top 100% | 1 / 3
Finish your support quest faster than your opponent
Pocket Picks: 2024 Split 3
Top 100% | 1
Complete a Mastery Set