Creature — Werewolf 5/5 (Color Indicator: Green)
Uncommon
{G}: Regenerate Ulvenwald Primordials.
At the beginning of each upkeep, if a player cast two or more spells last turn, transform Ulvenwald Primordials.
". . . and embrace the ancient ferocity of the undying Wild."
Illus. Dan Scott

9/22/2011: You can regenerate Ulvenwald Primordials in response to the triggered ability that would transform it. If you do, the regeneration shield will apply to Ulvenwald Mystics that turn.
Legal in Vintage (Type 1)
Legal in Legacy (Type 1.5)
Legal in Extended (Type 1.X)
Legal in Standard (Type 2)
Legal in Classic (MTGO)
Legal in Commander
Legal in Modern