Vasa Nistirio

Vasa Nistirio is one of the bosses encountered in The Chambers of Xeric. One of the Arceuus House elders, he became mad over time.

Mechanics
Vasa Nistirio is initially seen as a pile of rocks. Upon approaching the pile, he will animate himself and start the fight. He will also erect a flame barrier that will deal damage to those passing through it.

He uses an attack which is able to hit through protection prayers; this can be avoided by running out of the way.

Throughout the fight, a group of crystals will turn active; Vasa Nistirio will move towards those crystals to heal himself. Attack the crystals to stop him from healing. If the crystal is not destroyed or heavily damaged, Vasa will return to the center and forcibly teleport everyone in his line of sight to him. This will stun them, and he will unleash a powerful attack that can deal very high damage to everyone hit by it. Players can avoid being teleported by being out of his line of sight (his line of sight is a "+").

Players under Vasa will take rapid stomp damage from him.