OLC: Challenge mode
Old Lion's Court · Red and green tanks · Placing ground effects
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This guide focuses on mechanics added or changed in challenge mode.
Old Lion's Court

Assign one red tank, one green tank, and one player to bait the green boss's ground effect.
Careful placement of ground effects is important in this encounter.
Getting hit by the red boss gives it an empowerment stack. (Each stack increases its damage by 5%.)
During the red boss's mechanic, white arrows point inward or outward, as shown. Position yourself according to the arrows.
(This is an individual mechanic. Each player needs to read the floor beneath the boss and move accordingly.)

Being pulled into the green boss's area gives it an empowerment stack. (Each stack increases its damage by 5%.)
The blue boss pushes you away. Crossing the circle drawn around it gives the boss an empowerment stack. (Each stack increases its damage by 5%.)
Players targeted by the ground effect shown here must place it at the edge of the arena.
Before starting, assign someone to bait the green boss's ground effect. That player must stay farther from the green boss than everyone else to receive the target.
(Then place the effect at the edge of the arena, as shown.)
The wipe attack's location is random in CM, but you can identify the mechanic by watching the green boss's position.

The red and green tanks must be closest to their bosses when they land to receive the markers. Everyone else should stay back until the markers are assigned.
When the red boss lands and begins its wipe attack during CM, quickly break its defiance bar to invert the attack area, then move out of it.
(This lets players placing ground effects at the edge finish their job without getting caught in the wipe attack.)