|Zone (Patch)||Perah'Celsis' Abominable Laboratory (Sentinel's Fate)|
|Level||98▲▲▲ Tier 10 Epic x4|
During the fight against Xilaxis The Explorer, when Xilaxis is at 80% health he will start a ritual. If you want to fight Arkatanthis, do not disrupt the ritual. Arkatanthis and Xilaxis will attack your raid force together.