Hoko-Rochi, Great Swarm

Trample, deathtouch
Hoko-Rochi enters the battlefield with a +1/+1 counter on it.
Remove a +1/+1 counter from Hoko-Rochi:
Create a 1/1 colorless Sand Snake creature token.
Sacrifice a Sand Snake you control: Put a +1/+1 counter on Hoko-Rochi.
When Hoko-Rochi deals combat damage to a
player or a creature dealt damage by Hoko-Rochi
this turn dies, populate.