Viktor, Cruel Purist

Lifelink, Intimidate
Werewolf creatures opponents control get -1/-2
When Viktor enters the battlefield, destroy all
creatures that have more than one race in its
creature type (i.e. Vampire Werewolf, Zombie Elf,
etc. This ability doesn't affect creatures with more
than one class or a race and class in its creature type.)
"There can be no such union."