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(L40) The 12th Doctor Challenge 1 is the twentieth of the Challenge Levels. The 100% drop for the level is a Time Crystal. The secondary rare drop for the level is Bill Potts.


This level uses a pre-set team.

Name Gem Colors Ability Cooldown
The Twelfth Doctor Black/Blue Increase gem move time by 6 seconds for 1 turn. 50 combos
Does 24000 damage split between all enemies. 60 combos
Bill Potts Red/Red Increase 21% damage to all red attacks for 1 turn. 9 turns
Nardole Red/Red Convert black gems and pink gems to red. 6 turns
Fan River Song Blue/Yellow Increase 24% damage to all blue attacks for 1 turn. 9 turns
Angie Maitland Blue/Yellow Convert yellow gems and black gems to pink. 6 turns
Total HP: 9432


The enemy for this level is Mr. Brock, who can summon Gas Clouds.

Enemy Gem color HP Defence Attack / cooldown Power / cooldown
Mr BrockEnemy Yellow

Mr. Brock

Yellow 4k 1 Spawn: Summon gas cloud 1
Shuffle 1
Grab: Remove 1
Green Gas CloudEnemy Green

Green Gas Cloud

Green 1400 1 Stun 1
corrosion: Damage 12% 1


Wave Enemies
1 Mr. Brock