Augen, Belligerent Warlord

Enmity 4 (As this creature enters the battlefield, choose a player. Whenever this creature attacks that player, it gets +4/+4 until end of turn.)
Adjure 3 (When this creature enters the battlefield, choose up to three other creatures. As long as you control this creature, the chosen creatures get +1/+1.)
Whenever Augen, Belligerent Warlord attacks the player he has enmity with, creatures adjured by him get +1/+1 until