Princess Theradras

Zaetar's Grave
Find Rotgrip in the lake and bring the fight to the bank rather than spreading the group across the water. Clear the approach to Princess Theradras before pulling her: Repulsive Gaze can send players running into anything left nearby. Keep the group together for the climb from the lake to the final chamber.

Princess Theradras
Elite ElementalTheradras forces melee away with Dust Field while Boulder disrupts distant players and Repulsive Gaze threatens to scatter the group into the cleared approach.
Abilities

Dust Field
Leave Theradras' immediate area when Dust Field starts and return after its damaging knockback pulses stop.

Boulder
Hurls a boulder at an enemy.
Boulder can interrupt a cast and trigger Knockdown. Recover after the hit rather than relying on a long cast to finish through it.

Repulsive Gaze
Roars at an enemy, paralyzing it with terror for 8 seconds. and causing all other nearby enemies to flee in fear.
Clear the approach before pulling; Repulsive Gaze can send nearby players fleeing into enemies left on the route.

Thrash
Gives the caster 2 extra attacks.
Keep tank healing ready for Thrash's extra attacks, especially while other players are recovering from fear or Boulder.
Tank- Choose a position with cleared ground and rock behind you for Dust Field's knockback. Reconnect with Theradras after Repulsive Gaze and keep mitigation available for Thrash's extra attacks.
Healer- Cast from outside Dust Field while keeping sight of the tank. Prepare for Thrash bursts and restart interrupted healing after Boulder or fear instead of moving into the pulse to shorten the distance.
Damage- Leave melee range during Dust Field, then return after the pulses end. Resume heavy damage once the tank has recovered from Repulsive Gaze; keep your retreat within the cleared chamber.