Batrachotropsy

The act of turning someone or something into a frog: also (less frequently) the wizardry used to return something to its proper shape or state after it's been a frog.

Naturally this change, like most others, is regulated by the Troptic Stipulation of the Wizard's Oath, which states that genuine changes (as distinct from virtual shapechange of the strictly visual type) are only sanctioned when a creature's own growth or life, or that of its host system, are threatened. It's left to the wizard, as usual, to determine on a case-by-case basis when these conditions apply.

Batrachotropsy is not to be confused with batracholepsy, to turn yourself into a frog (q.v.)

See also: Amphibia: Curses and maledictions (release strategies): Geasa: Grimm, Brothers (Archetypes in wizardry); Osculation (elective).