Transformation

Transformations are effects that alter the form of a creature's body. While many of them are caused by Transmutations spells, a few of them have other sources. They have a few common properties:

• Undead creatures cannot be transformed. For players, this means that Ghouls and Mummies can never be transformed, while Vampires can only be transformed when at Full or higher satiation.
• Transformations are always temporary, although sometimes their duration can be extended. Whether or not they can be cancelled at will depends on the transformation itself and/or its source. Even those that can be cancelled take a few turns to actually do so.
• Most transformations will meld at least some equipment. Melded equipment ceases to have any effect (except ponderousness from armour), positive or negative, but it is not unequipped: thus, transformations are not (usually) blocked by cursed items, but cannot get rid of them either.
• Transformations frequently alter a character's unarmed damage, sometimes even imparting a brand to said attacks.
• Transformations may alter a number of other properties, including HP, movement speed, size (and therefore EV), AC, and mutations, among others.