Surrender to Fenri

Enchanted creature gains +2/+1, Menace, and
"Pay 3 life: Reenchanted creature gets
Indestructible until end of turn."
Enchanted creature gains Berzerker, Black,
Spirit, and Werewolf.
At the beginning of your upkeep, sacrifice
another non-artifact creature and create a Food.
If you cannot, you lose 3 life.
The Wolf filled survive by devouring all others.