血(ち)怒(いか)りの頭(とう)目(もく)

When this creature enters the battlefield, choose one —

• Another target Wolf or Werewolf you control fights target creature you don't control.

• You get a one−time boon with "When you cast a Wolf or Werewolf spell, it gains 'When this creature enters, it fights up to one target creature you don't control.'"