Mimic

Mimic is a disguised ambush vermin that copies the block beneath its feet. At rest it passes for world terrain.

The disguise ends when it is hit, or when a player brushes against it closely enough and the awaken roll succeeds. After that it grows legs, chases like a living trap, and attacks at close range. About 10% spawn as a faster variant, which is why some Mimics feel much more aggressive than others.

Its copied block matters. The disguise determines whether pickaxes or axes are the correct weakness, and the death table can include the copied block or the block's own loot on top of the usual tungsten appendages. This makes it useful for duplicating blocks that are rare or hard to come by, such as gold blocks or state blocks, or for farming drops from blocks that do not drop themselves, such as glass blocks or cardboard boxes. For these purposes, they are best spawned using a vermin vigil block.

If spawned on select, rare, and naturally unfindable blocks such as the debug block, it can drop ball essence.

It will not copy robust blocks or air (if you throw a mimic capsule at a wall, for instance). In these cases, it will default to a Tungsten Block.

Mimics appear across many ordinary biomes. If a lone block looks out of place, assume it might not stay a block.