136Challenge Profile / JP
うまお#5626
Latest Riot challenge data cached by Lolytics.
Updated 1d ago
9,485
Challenge crystal
Platinum
Overall challenge tier
274
274 cached rows
May 8
Riot payload refresh
Challenge Progress
Earned and progressed challenges
274 cached challenges
The Brush Has Eyes: 2024 Split 1
Top 0% | 82
82
Ladder threshold
Do These Things Have Souls?
#53,024 | Top 1.4% | 191,758
#53,024
Ladder placement
Go Where You Please
#50,365 | Top 1.3% | 3,994
#50,365
Ladder placement
Darkness is Everywhere
#148,741 | Top 3.9% | 3,685
#148,741
Ladder placement
The Jukes!
#17,010 | Top 0.4% | 3,545
#17,010
Ladder placement
Dinner's Ready
#64,181 | Top 1.7% | 2,449
#64,181
Ladder placement
Turret Toppler
#65,368 | Top 1.7% | 1,993
#65,368
Ladder placement
Insec-urity Breach
#68,397 | Top 1.8% | 1,864
#68,397
Ladder placement
Master of the Rift
#60,040 | Top 1.6% | 1,274
#60,040
Ladder placement
Making the Dream Work
#55,911 | Top 1.5% | 1,067
#55,911
Ladder placement
Killing Spree Spree
#68,487 | Top 1.8% | 720
#68,487
Ladder placement
The Fire Rises: 2024 Split 2
Top 6.1% | 583
Collect Infernal Cinders
Damage Dispenser
#72,001 | Top 1.9% | 486
#72,001
Ladder placement
Stun n Gun: 2024 Split 2
Top 4.5% | 482
Immobilize then takedown an enemy with an ally
Top Diff
#15,203 | Top 0.4% | 372
#15,203
Ladder placement
Ward Ward-en
#109,405 | Top 2.8% | 348
#109,405
Ladder placement
Visionary
Top 2.3% | 260
Earn progress from challenges in the Visionary group
Top Performer
#104,978 | Top 2.7% | 254
#104,978
Ladder placement
Global Defense System
#16 | Top 0.1% | 227
#16
Ladder placement
Mid Diff
#58,595 | Top 1.5% | 192
#58,595
Ladder placement
Shoddy Construction
#103,970 | Top 2.7% | 168
#103,970
Ladder placement
Pain Prescriber
#71,594 | Top 1.9% | 150
#71,594
Ladder placement
Not Even a Scratch
#8,967 | Top 0.2% | 148
#8,967
Ladder placement
Nullify the Void: 2024 Split 2
Top 4.6% | 108
Takedown Void Monsters
Gets The Wurm
#18,508 | Top 0.5% | 74
#18,508
Ladder placement
Nice Try: 2024 Split 2
Top 5.8% | 58
Kill enemies under your own turret
Wurm Fishing: 2024 Split 1
Top 2.9% | 51
51
Ladder threshold
Unkillable Demon King
#45,616 | Top 1.2% | 51
#45,616
Ladder placement
Invulnerable
Top 6% | 44
Obtain <em>tank champions</em>
Inspiring
Top 7.7% | 35
Obtain <em>support champions</em>
Ward Hunter
#42,766 | Top 1.1% | 25
#42,766
Ladder placement
Right Under Their Noses
Top 2.2% | 20
Recall while unseen by a nearby champion
Global Defense System: 2024 Split 3
Top 6.6% | 19
Have a control ward in enemy jungle for 65+% of the game
Immortal
Top 4% | 16
Win a game with more than eight kills without dying
Darkness Distributor: 2024 Split 2
Top 3.8% | 14
Takedown the most wards in a game
Open Victory
Top 6.4% | 13
Win with an open nexus
Lane Domination: 2024 Split 3
Top 4.7% | 11
Be up 20% gold and XP at 14min
Right Under Their Noses: 2024 Split 1
Top 2.2% | 3
Recall while unseen by a nearby champion
Flawless Victory
Top 8.3% | 1
Win a Perfect Game
Get Paid, and Get Out
Top 5.4% | 12,940,748
Earn gold
Ability Abuse
Top 5.3% | 208,256
Use Abilities
Everyone Pays!
Top 3.7% | 175,481
Earn bounty gold
Immediate Immobilization
Top 4.8% | 24,509
Immobilize enemies
Little Inanimate Spies
Top 3.6% | 9,736
Place Stealth Wards
Team Takedown
Top 4.5% | 8,921
Get picks with at least one ally
Above-Average Assistance
Top 4% | 7,435
Get Assists
Hard Day's Killin'
Top 3.9% | 5,849
Get Kills
Solo Bolo
Top 2.1% | 2,033
Get solo kills
Medal of Honor
Top 4.2% | 1,815
Earn progress from challenges in the Executioner, Commando, Resourceful, and Mystic groups
Goodbye to the Darkness!
Top 5.8% | 1,548
Place Control Wards
No Quarter
Top 4.3% | 1,323
Kill champions under their own turret
Ascendant
Top 4% | 995
Earn progress from challenges in the Domination, Unrivaled, and Perfection groups
Determination
Top 5.8% | 950
Earn progress from challenges in the Monster Hunter, Steadfast, and Symbiosis groups
Nice Try
Top 3.7% | 619
Kill enemies under your own turret
Fun with Friends
Top 3.7% | 605
Play games with a group
2024 Seasonal: Split 2
Top 5.2% | 605
Earn progress from challenges in the 2024 Seasonal: Split 2 group
Executioner
Top 4.3% | 540
Earn progress from challenges in the Executioner group
Champion
Top 8.1% | 500
Earn progress from challenges in the Champion group
Resourceful
Top 5.1% | 500
Earn progress from challenges in the Resourceful group
Mastermind
Top 4% | 450
Earn progress from challenges in the Cornerstone and Visionary groups
Splitpush Strategy
Top 2.2% | 449
Take side lane turrets solo without dying
The Brush Has Eyes
Top 4.6% | 382
Finish a game up 20% Vision Score
Unrivaled
Top 3.6% | 325
Earn progress from challenges in the Unrivaled group
Movin' On Up
Top 2.2% | 315
Win ranked games in Solo/Duo or Flex queue
Strategy
Top 4.6% | 300
Earn progress from challenges in the Strategy group
Adept
Top 4.9% | 275
Earn progress from challenges in the Adept group
KDA Player
Top 2.1% | 274
Get a KDA over 3 in Solo/Duo Queue
Wurm Fishing
Top 5.3% | 274
Take down Barons
Steadfast
Top 6.8% | 265
Earn progress from challenges in the Steadfast group
Domination
Top 4% | 265
Earn progress from challenges in the Domination group
Synergy
Top 3.7% | 250
Earn progress from challenges in the Synergy group
Flawless Ace
Top 4.3% | 242
Ace the enemy team with no allied deaths
Symbiosis
Top 7% | 240
Earn progress from challenges in the Symbiosis group
Baron Power Play
Top 5.2% | 234
Generate 2500 gold advantage with Baron Buff
Perfection
Top 5.3% | 225
Earn progress from challenges in the Perfection group
Behemoth
Top 3.7% | 225
Earn progress from challenges in the Behemoth group
Swarm Survivor
Top 2.3% | 200
An Anima Squad merit badge for Swarm 2024
Team Spirit
Top 4.5% | 185
Earn progress from challenges in the Team Spirit group
On Another Level
Top 3.9% | 184
Be up three more levels than role opponent at any point
Lane Domination
Top 4.3% | 175
Be up 20% gold and XP at 14min
Style
Top 3.4% | 155
Earn progress from challenges in the Style group
Mystic
Top 5% | 145
Earn progress from challenges in the Mystic group
Spice of Life
Top 6.7% | 142
Obtain <em>champions</em>
Dancing Shoes
Top 2.4% | 125
Dodge five skillshots within eight seconds
Target Selection
Top 4.7% | 123
Take down junglers near a damaged Epic Monster
Bloodcrazed
Top 5% | 93
Get First Bloods
Lane Command
Top 4.2% | 87
Be up 20% gold and XP at 7min
Soul Sweep
Top 5.3% | 69
Claim Dragon Souls 4-0
Legendary Legend
Top 3.2% | 67
Become Legendary
Incandescent
Top 8.2% | 61
Obtain <em>mage champions</em>
Indomitable
Top 6.6% | 57
Obtain <em>fighter champions</em>
No Capstone Unturned
Top 7.3% | 49
Reach Gold tier on Capstones
Lethal Efficiency
Top 3% | 49
Kill 80 minions within 10 minutes
Uninhibited
Top 4.4% | 47
Win after losing an inhibitor
Invisible
Top 6.6% | 36
Obtain <em>assassin champions</em>
Incredible Value
Top 6.4% | 31
Kill two wards with one sweeper activation
Top Performer: 2024 Split 2
Top 3.7% | 27
Earn S- grade or higher
Ingenious
Top 8.9% | 22
Obtain <em>marksman champions</em>
Meat Shield
Top 2.8% | 22
Win the game taking at least 35% of team damage
Plant Tactics
Top 3.2% | 17
Use blast cones to escape enemies
Prodigy
Top 7.4% | 6
Become Legendary within 15 minutes
Victorious Regalia
Top 3.3% | 4
Collect <em>victorious champion skins</em>
Overwhelming Presence
Top 4.8% | 3
As a laner, in 1 game, get kills outside your lane before 10 min
One Stone: 2024 Split 3
Top 3.7% | 3
Kill two players with the same ability cast
Draconic Extinction
Top 9.6% | 2
Kill two Elder Dragons in a single game
Can of Wurms
Top 10.7% | 1
Kill three Barons in a single game
Wise Master
Top 7.4% | 1,249,848
Earn Mastery Points
One-Trick
Top 7.5% | 133,182
Gain Mastery Points on a single champion
Fish Fear Me
Top 2.5% | 78,693
Defeat enemies
A Honeyfruit a Day: 2024 Split 3
Top 7.1% | 10,968
Restore health through map-based healing sources
Stun n Gun
Top 5.5% | 3,938
Immobilize then take down an enemy with an ally
EXPERTISE
Top 6.9% | 3,045
EXPERTISE capstone
VETERANCY
Top 6.2% | 2,385
VETERANCY capstone
TEAMWORK
Top 5.2% | 2,200
TEAMWORK capstone
Brush Fanatic
Top 7.6% | 1,022
Get takedowns with an ally after hiding in brush for 3+s
Captain
Top 7.7% | 995
Earn progress from challenges in the Strategy, Demolition, Synergy, and Team Spirit groups
Never Tell Me the Odds
Top 5.4% | 901
Get kills while outnumbered
Might
Top 6% | 850
Earn progress from challenges in the Flair, Behemoth, Slayer, and Predator groups
Give 'em Shell, Shelly
Top 4.7% | 755
Take turrets with Rift Herald
Lizard Hunting
Top 5.8% | 666
Take down Dragons
Cleverness and Creativity
Top 6.4% | 555
Earn progress from challenges in the Style, Innovation, and Tactician groups
Farm Champs Not Minions: 2024 Split 2
Top 3.8% | 481
Get Takedowns in ARAM
Multikill Madness
Top 6% | 478
Get Multikills
Commando
Top 6.4% | 410
Earn progress from challenges in the Commando group
2024 Seasonal: Split 1
Top 4% | 375
Earn progress from challenges in the 2024 Seasonal: Split 1 group
2024 Seasonal: Split 3
Top 7.4% | 325
Earn points from challenges in the 2024 Seasonal: Split 3 group
Monster Hunter
Top 12.1% | 285
Earn progress from challenges in the Monster Hunter group
Slayer
Top 6.1% | 230
Earn progress from challenges in the Slayer group
Ace
Top 4.3% | 225
Earn progress from challenges in the Ace group
Magnum Opus
Top 4.2% | 215
Earn progress from challenges in the Magnum Opus group
A Drake and a Hard Place
Top 5.1% | 205
Kill opponents with help from an Epic monster
Innovation
Top 6.1% | 175
Earn progress from challenges in the Innovation group
Overachiever
Top 5.9% | 170
Earn progress from challenges in the Overachiever group
Flair
Top 8.3% | 170
Earn progress from challenges in the Flair group
Power Pair
Top 1% | 163
Win with a premade party of two in a ranked queue
Arena Brawler
Top 2.2% | 160
Deal the most damage to champions in the game
Been Here a While
Top 7.1% | 135
Increase your summoner level
Golden
Top 6.4% | 122
Have more than 450 gold per minute in a game
Bouncer
Top 4.3% | 118
Get the highest crowd control score in the game
Big-Fish Hunting
Top 2.8% | 103
Defeat 10 minibosses on difficulty 2+
Synchronicity
Top 3.1% | 100
Earn progress from challenges in the Synchronicity group
Tactician
Top 5.8% | 85
Earn progress from challenges in the Tactician group
Challenges are Forever
Top 4.3% | 84
Reach Diamond tier on different challenges
Entitled
Top 5.4% | 59
Earn titles from challenges
Shattered Plates
Top 5.8% | 52
Destroy turrets before plates fall
Legendary Arms: 2024 Split 1
Top 3.3% | 48
Win Games with <em>different Legendary Items</em>
Level 1 Fiesta
Top 5.4% | 41
Get takedowns before jungle camps spawn
One Stone
Top 4.9% | 41
Kill two players with one ability cast
Get On My Level
Top 3.7% | 33
Get takedowns after gaining an early level advantage
Double Down
Top 1.9% | 23
Get double kills
The Wall
Top 2.2% | 20
Take 10k damage in a fight and survive
Overleveled, Overboard
Top 4.2% | 12
Reach Level 30 on any champion
Comeback Kids
Top 6.6% | 7
Win after being down 15 kills
DPS Threat
Top 13.8% | 6
Deal more than 1800 DPM
Who Needs 'Em
Top 14.5% | 4
Win a game despite an AFK teammate
Team Diff
Top 6.1% | 3
Score aces between minion spawn and 15 minutes
Field Medic
Top 7.6% | 271,298 / 450,000
Effectively heal or shield allies
Goldfishing
Top 4.3% | 18,247
Pick up 1000 Gold
COLLECTION
Top 8.4% | 1,020 / 1,100
COLLECTION capstone
IMAGINATION
Top 10.7% | 835 / 1,200
IMAGINATION capstone
Sage
Top 5.4% | 485 / 560
Earn progress from challenges in the Guru, Virtuoso, and Ace groups
Fashionably Late
Top 2.4% | 188 / 375
Get a takedown after teleporting to a >4 champion fight
Shell Collecting
Top 7.5% | 156 / 180
Take down Rift Heralds
Guru
Top 6.5% | 120 / 160
Earn progress from challenges in the Guru group
Icon of the Rift
Top 10% | 85 / 100
Obtain Summoner Icons
Treasure
Top 8.1% | 75 / 110
Earn progress from challenges in the Treasure group
Emotive
Top 10.1% | 73 / 80
Obtain emotes
Alcove Gaming
Top 8.3% | 72 / 75
Take down opponents in the alcove
Darkness Distributer
Top 8% | 71 / 120
Take down the most wards in the game
Cornerstone
Top 6.9% | 65 / 80
Earn progress from challenges in the Cornerstone group
Support Subsidy
Top 7.7% | 62 / 75
Fully complete your support quest in 14 minutes
Demolition
Top 5.7% | 55 / 80
Earn progress from challenges in the Demolition group
Not Even Close
Top 25.1% | 44
Survive champion combat on single digit health
Masterful Performance
Top 5.3% | 38 / 75
Reach Masters tier on different challenges
Dragon On Too Long
Top 7.7% | 37 / 75
Take down first dragon before eight minutes
Leading by Example
Top 4.4% | 35 / 90
Get an assist streak of 12+ without dying
Fashion Forward
Top 8.4% | 33 / 75
Collect champion skins
All-Seeing
Top 5.9% | 27 / 75
Have over 2 vision score per minute
Invincible
Top 5.4% | 24 / 30
Win without dying with <em>different champions</em>
Let's Make This Quick
Top 19.1% | 24
Destroy the enemy nexus in less than 15 minutes
Support Subsidy: 2024 Split 1
Top 2.4% | 21 / 25
Fully complete your support quest within 14 minutes
Aggressive Positioning
Top 7.9% | 21 / 35
Get multikills after flashing towards an enemy
Flame Horizon
Top 5.4% | 12
Win games with 100+ more CS than role opponent
Ward Skin Collector
Top 8.8% | 11 / 20
Obtain ward skins
Can't Miss
Top 9.6% | 7
Land 20 skillshots before seven minutes
Ladder Climber
Top 7.4% | 6 / 9
Earn rank in Solo/Duo Queue
No Loyalty Among Dragons
Top 10.6% | 4
Take Elder Dragons when enemy has the Dragon Soul
Winhibitors
Top 10.7% | 3
Destroy all three enemy inhibitors in under 25 minutes
Whose Lane is it Anyway
Top 5.6% | 2
As a laner, get takedowns in all lanes before 10min
Dragon's Fury
Top 7.5% | 2
Get multikills with Elder Dragon
Damage Sponge
Top 4.1% | 2
In one fight, get kills while tanking all five enemies and survive
Happy Feet
Top 10.4% | 1
Dance with the Rift Herald in the enemy base
Lightning Round
Top 15.9% | 1
Win games before 13 min
ARAM Authority
Top 15% | 205 / 360
Earn progress from challenges in the ARAM Warrior, ARAM Finesse, and ARAM Champion groups
Alliance
Top 10.1% | 140 / 620
Earn progress from challenges in the Clash, Synchronicity, Harmony, and Globetrotter groups
Connoisseur
Top 10% | 135 / 150
Earn progress from challenges in the Connoisseur group
Predator
Top 12.2% | 70 / 150
Earn progress from challenges in the Predator group
ARAM Warrior
Top 16.1% | 70 / 115
Earn progress from challenges in the ARAM Warrior group
Jack of All Champs
Top 5% | 68 / 75
Win games with <em>different champions</em>
Support Diff
Top 5.4% | 67 / 75
Win games as a Support
Virtuoso
Top 5.2% | 60 / 100
Earn progress from challenges in the Virtuoso group
ARAM Champion
Top 14.9% | 60 / 100
Earn progress from challenges in the ARAM Champion group
Superior Supporting
Top 5.9% | 41 / 50
Finish your support quest faster than your opponent
Target Secured
Top 9.3% | 31 / 38
Secure Epic Monsters with the enemy jungler nearby
Perfectionist
Top 5.4% | 18 / 30
Earn an S+ grade with <em>different champions</em>
I've Got You!
Top 1.9% | 17 / 20
Save an ally with a heal or shield
Life, Uh, Finds a Way
Top 4.3% | 15
Evolve any Weapon
Fashionista
Top 6.3% | 12 / 15
Collect chromas
Farm Champs not Camps
Top 11.2% | 11 / 25
As jungler, get kills on laners before 10 minutes
Hold Your Breath
Top 4.4% | 11
Survive 15 Minutes
Clutch Steal
Top 8% | 7 / 10
Steal Epic monsters
Nowhere is Safe
Top 15.7% | 5
Take down champions in their fountain
Master Tank (Legacy)
Top 2.1% | 5 / 10
Get Mastery 7 on different <em>tanks</em>
Forever Triumphant
Top 5.6% | 3
End season splits ranked Gold or higher
Death Incarnate
Top 15.3% | 3
Take down 12 champions within 15 minutes
Rapid Demolition
Top 9.3% | 3 / 5
Take the first turret before 5 min
Anemone Frenemy
Top 3.9% | 2
Defeat Briar
Clean Clears
Top 10.4% | 1
Get 70 CS from jungle monsters before 10 minutes
It was a... Near-Hit
Top 13.5% | 2,657 / 3,600
Dodge skillshots
Dine In
Top 10.2% | 1,688 / 4,000
Kill jungle monsters in your jungle
Another Day, Another Bullseye
Top 12.5% | 1,101 / 2,500
Hit skillshots on champions
Farm Champs Not Minions
Top 12.5% | 995 / 2,000
Get Takedowns
Dine Out
Top 10.8% | 543 / 600
Kill jungle monsters in the enemy jungle
Snow Day
Top 12.9% | 137 / 150
Hit snowballs on champions
Scuttle Along Now
Top 12.8% | 120 / 150
Kill scuttle crabs
No Hiding
Top 13.2% | 57 / 125
Kill enemies near one of their turrets
Passive Aggressive
Top 4.6% | 41
Have 3 Passives at once
Buff Burglar
Top 13.5% | 37 / 40
Take enemy buffs
ARAM Finesse
Top 13.9% | 35 / 45
Earn progress from challenges in the ARAM Finesse group
That Was Close
Top 9.5% | 27 / 50
Save an ally with a heal or shield
Master Yourself
Top 5.5% | 16 / 30
Earn Mastery 5 on <em>different champions</em>
NA-RAM
Top 12.2% | 16 / 35
Win games
Fancy Garb
Top 9.5% | 14 / 25
Collect <em>epic champion skins</em>
Champion Ocean: 2024 Split 3
Top 7.4% | 13 / 15
Win games with <em>different champions</em>
Arena Champion
Top 1.8% | 10 / 15
Earn progress from challenges in the Arena Champion group
Master the Enemy (Legacy)
Top 5% | 9 / 15
Earn Mastery 7 on <em>different champions</em>
Malfunction
Top 39.3% | 6 / 10
Win games
Legendary Wardrobe
Top 8.5% | 5 / 7
Collect <em>legendary champion skins</em>
Master Mage (Legacy)
Top 3.5% | 5 / 12
Get Mastery 7 on different <em>mages</em>
Bad Medicine
Top 13.1% | 4 / 7
Kill enemies recently healed by a health pack
Dedicated Master: 2024 Split 3
Top 7.2% | 4 / 6
Earn Mastery Milestones
Blink and You'll Miss It
Top 12.6% | 3 / 7
Kill champions from full health in 1.5 seconds
That Drip
Top 13.4% | 2 / 3
Collect many skins for a single champion
Ten Minute Turret
Top 8.5% | 2 / 5
Destroy the first turret in under 10 minutes
Free Money
Top 17.8% | 760 / 900
Kill minions
Bot Diff
Top 11.3% | 16 / 30
Win games as a Bot Carry
Machine-Hunting Mercenary
Top 39.3% | 15 / 30
Earn progress from challenges in the Machine-Hunting Mercenary group
Arena Champion Ocean
Top 2.5% | 13 / 15
Play Arena games with <em>different champions</em>
Jungle Diff
Top 10.8% | 12 / 30
Win games as a Jungler
Always On Time
Top 14.1% | 9 / 10
Kill Epic Monsters within 30 seconds of spawn
Vintage Look
Top 18% | 8 / 10
Collect <em>legacy champion skins</em>
Sparkles & Fireworks: 2024 Split 2
Top 3.4% | 6 / 15
Participate in Fistbumps in matchmade games
No Hiding: 2024 Split 3
Top 6.7% | 6 / 8
Kill enemies near one of their own turrets
Go Shelly Go!
Top 14.3% | 4 / 5
Take 2 turrets with the same Rift Herald
Protean Override
Top 39.3% | 4 / 5
Win games with <em>different champions</em>
Master Fighter (Legacy)
Top 8.2% | 4 / 5
Get Mastery 7 on different <em>fighters</em>
Master the Enemy
Top 4.9% | 3 / 7
Earn Mastery 10 on <em>different champions</em>
Adapt to All Situations
Top 1.5% | 3 / 6
Place first in Arena games with <em>different champions</em>
Crab Wrangler
Top 17.4% | 2 / 4
Take both of the first scuttle crab spawns
Recursive
Top 8.4% | 2 / 5
Complete collection challenges
Master Support (Legacy)
Top 7.3% | 2 / 3
Get Mastery 7 on different <em>supports</em>
Master Assassin (Legacy)
Top 7.8% | 2 / 5
Get Mastery 7 on different <em>assassins</em>
Master Fighter
Top 5.4% | 2 / 5
Get Mastery 10 on different <em>fighters</em>
Master Mage
Top 6.2% | 2 / 5
Get Mastery 10 on different <em>mages</em>
Always On Time: 2024 Split 1
Top 6.6% | 1 / 2
Kill Epic Monsters within 30 seconds of spawn
Crab Wrangler: 2024 Split 1
Top 5.3% | 1 / 3
Take both of the first scuttle crab spawns
Master Tank
Top 4.4% | 1 / 3
Get Mastery 10 on different <em>tanks</em>
Master Support
Top 4.6% | 1 / 3
Get Mastery 10 on different <em>supports</em>
TY for Leash
Top 15.5% | 1 / 2
Steal an Epic Monster without Smite
Outplaying the Odds
Top 4.3% | 1 / 2
Get kills while outnumbered
All Random All Champions
Top 17.7% | 1 / 5
Earn an S- grade on <em>different champions</em>
All Random All Flawless
Top 16.9% | 1 / 2
Earn S grades or higher
Robo Recall
Top 100% | 21 / 50
Get kills
Pocket Picks: 2024 Split 3
Top 100% | 2
Complete a Mastery Set