Tul, Nether King

Tul, Nether King gets +1/+1 for each creature
card in each opponent's graveyard.
If Tul, Nether King would deal combat damage
to a player, that player puts that many cards from
the top of their library into their graveyard.
When Tul, Nether King dies, create X 1/1 black
and green Insect creature tokens where X is
Tul's toughness.