Trollager

The Trollager is a hostile monster added by Primitive Mobs. It spawns in dark places on the surface of the Overworld, above y-level 40.

It senses nearby players through walls and attempts to attack them. It alternates between melee attacks, throwing blocks from the ground at its target and smashing the ground, causing a Creeper sized explosion around it.

When exposed to sunlight, it turns to stone. In this state it becomes completely immobile and harmless, but becomes immune to any damage except from Pickaxes. It will turn back into its normal form once it stops being exposed to it.

When killed it drops 1-2 Obsidian, Emeralds or Golden Apples, with each rarer than the previous one. If it was in stone form it drops 32 Stone instead.