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Best In Class
Defeat the One-Armed Bandit after activating all four Chip Defense Machines in Liberation of Undermine on Normal difficulty or higher.
Best In Class requires defeating the One-Armed Bandit in Liberation of Undermine on Normal difficulty or higher after activating all four Chip Defense Machines by collecting four coins found around the casino and bringing each one to a slot machine outside the boss room.
Collect the Four Coins
Before engaging the One-Armed Bandit, locate the four coins scattered around the casino area and bring each one to the slot machines just outside the boss room to activate all four Chip Defense Machines.
Understand Each Coin Buff
Each coin applies a different buff to the One-Armed Bandit: Red creates expanding fire rings similar to ring-dodge mechanics, Blue causes intermittent silence via a ground effect with no cast bar, Purple applies an 80% healing and absorb reduction to all units within 12 yards of the boss, and Gold applies a fourth effect.
Prepare Your Group Composition
A group of 2 tanks, 3 healers, and 10 DPS at approximately 660 item level or higher is a workable setup; at 670 or above the encounter becomes significantly more manageable, with tanks rotating cooldowns and melee players staying disciplined around the boss.
Manage the Heal Reduction
Melee players must stay aware of the 12-yard healing reduction aura from the Purple coin buff; Unholy Death Knights can use a Clawing Shadows build to attack from range and avoid the healing penalty.