Transforming is an act that permanently turns a card into a random different card. It is usually done through certain Relics and Events.
Rules and mechanics[]
- Every eligible card has the same chance to be picked. A card is just as likely to become a Demon Form as it is a Disarm.
- A Curse will only transform into another Curse.
- A card cannot transform into the same card.
- Cannot transform a card into a Basic card.
- A colored (i.e. character-specific) card will only turn into another card of the same color. This means that, under normal circumstances, the player would only receive a card of their current character.
Prismatic Shard does not affect transforms, as it only affects combat rewards.- Diverse and similar modifiers do allow a card to transform into another color.
- Colorless Cards will only transform into another colorless card.
- They cannot transform into Special cards.
- Mechanically, the old card is removed and the new card is added to your Deck. Because of this, the rules and effects for card removal/add are applied:
- Cards that cannot be removed, such as Bottled cards, Necronomicurse, and Curse of the Bell, cannot be transformed.
- An Upgraded card will not (normally) transform into an Upgraded card, since the original was removed and replaced.
Molten Egg, 
Toxic Egg, and 
Frozen Egg will upgrade the new card, since it is added to your deck.- Omamori and Darkstone Periapt will trigger if you Transform a Curse, since a new Curse is added.
- Hoarder modifier will add 3 copies instead of 1.
