Splintered Lupine

Deathtouch, menace
Emerge {5}{b}{g} (You may cast this spell by sacrificing a creature and paying the emerge cost
reduced by that creature's converted mana cost.)
At the beginning of each upkeep, if no spells
were cast last turn, and at least one creature died
last turn, you may sacrifice a creature. If you do, transform Splintered Lupine.
The werewolf's eyes flashed a deep purple, and it was very apparent that a new transformation was about to take place...