Gutworm Warrior

Double Strike, Intimidate
When Gutworm Warrior enters the battlefield, put X +1/+1 counters on it, where X is the number of creatures in your graveyard.
When Gutworm Warrior dies, put X 1/1 black and green Worm creature tokens into play, where X is the number of +1/+1 counters on Gutworm Warrior.