Arrax, the Frostpact Alpha

Vigilance, Trample
Other Wolves and Werewolves you control
get +1/+1
Whenever another creature dies, you may
transform target creature you control.
{b}{r}{g}{w},{t}: search your library for a wolf
or werewolf card, put in onto the battlefield,
then shuffle your library
The Pack leaders howl echos for miles, bringing
certain death trespassers