The Swarmlord

Whenever Bellowing Aegisaur is dealt damage,
put a +1/+1 counter on target Tyranid you
control, then it fights up to one target creature
you don't control.
Whenever another creature dies, put a
+1/+1 counter on The Swarmlord.
When The Swarmlord dies, create X 2/1 black
Tyranid creature tokens, where X is
The Swarmlord's power.