Gizzard

A rare Guts set consumable that triggers Mockingbird Form on use and grants a random bird mutation at the end of battle. The form transformation and mutation reward make it a unique pick for bird-themed or mutation-stacking builds. Noted as potentially unused in the current game version, so actual availability may be limited.

Mockingbird Form is a specific transformation state that changes how your character behaves in combat, likely granting bird-type passives or attack patterns for the duration. The end-of-battle bird mutation reward is a permanent addition to your mutation pool. Since the item may be unused in the current version, it's unclear which loot sources it appears in or whether it functions as documented.

If functional, best used on mutation-focused builds that want to accelerate bird mutation acquisition. The Guts set association suggests it might pair with organ-themed items like Liver and Heart. Treat it as a bonus if found rather than something to plan around, given the uncertainty around its active status in the current release.