Worm, the Bound

Trample
When Worm, the Bound enters the battlefield,
if an opponent controls an insect or black
creature, Worm, the Bound deals 2 damage to
each other creature and planeswalker.
If Worm, the Bound would die as a result of
combat damage, shuffle it into your library
instead, then create a 0/1 familiar token.
If your fight is against my master, I will help.