Morgott, the Omen King

Haste, double strike, trample
Whenever Morgott, the Omen King kills another creature, Morgott the Omen King deals 1 damage
to each creature target opponent controls.
Whenever Morgott, the Omen King deals combat damage, another target creature you control gets
+X/+X until the end of your next turn where X
is the number of creatures that died this turn.