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Alphabirth adds new transformations to The Binding of Isaac: Rebirth. Each transformation grants unique abilities to Isaac, and are obtained by collecting a set amount of specific items that are both from the base game and from Alphabirth.

Name Costume Pack Effect
Cyborg Cyborg Costume.png Pack 2.png

Each additional active charge gives Isaac an all-stats up increase

Batteries have an increased chance of spawning on room clear

Damned Damned Costume.png Pack 2.png

Grants flying

Replaces Isaac's health with Black Hearts

Upon death, the "Forget Me Now" effect triggers, respawning Isaac at the start of the floor with 3 Black Hearts

Waxed Waxed Costume.png Pack 1.png

Isaac takes no damage from fire

Upon being damaged Isaac shoots out fires in all directions