https://minecraft.fandom.com/wiki/Minecraft_Dungeons:Geomancer

Behaviour Between creating pillars, it tries to stay away from the hero by slowly walking. Geomancers raise two types of pillars out of the terrain using magic to assist other mobs.

Basic attack Geomancers summon geomancer walls strategically to assist the other enemies and block heroes. After five seconds, it descends back into the ground.

Strong attack Geomancers summons geomancer bombs close to the hero. After five seconds of continually sprouting orange cracks, it explodes with high damage within a small radius.