Resurgent transformation grants you the ability to recover from deadly wounds with restored vitality and a will to fight, but at a price. Once cast, resurgent transformation lies dormant for up to 1 hour per level until you are reduced to one-quarter hit points or less. Once triggered, you immediately gain a +4 enhancement bonus to Constitution and Strength, damage reduction 5/—, and the benefits of a haste spell. In addition, you heal 4d8 points of damage + 1 point per caster level (maximum +25).

The advantages from your transformation persist for 1 round per caster level after the spell is triggered. Once the spell ends, it takes a heavy toll, leaving you exhausted and inflicting 1d4 points of Constitution damage. Utilizing more than one resurgent transformation in a day is particularly risky. The expiration of a second resurgent transformation in a 24-hour period inflicts an additional 1d4 points of Constitution damage and results in death from system shock unless you succeed at a DC 15 Fortitude save, made after the Constitution damage has been applied.

If the spell expires or is dispelled before the transformation has been triggered, no adverse effects result.