Harry Potter - Secrets of Hogwarts

This spell transforms a creature with at least 1 hit point that you can see within range into the form of a rabbit. An unwilling creature must make a Wisdom saving throw to avoid the effect. Part 2 | Spells The transformation lasts for the duration, or until the target drops to 0 hit points or dies. The target's game statistics, including mental ability scores, are replaced by the statistics of a rabbit. It retains its alignment and personality. The HM has the creature's statistics. The target assumes the hit points of its new form. When it reverts to its normal form, the creature returns to the number of hit points it had before it transformed. If it reverts as a result of dropping to 0 hit points, any excess damage carries over to its normal form. As long as the excess damage doesn't reduce the creature's normal form to 0 hit points, it isn't knocked unconscious.