Devour 2 (As this creature enters, you may sacrifice any number of creatures. It enters with twice that many +1/+1 counters on it.)
At the beginning of your upkeep, create a 1/1 green Saproling creature token for each +1/+1 counter on this creature.
Annihilator 1 (Whenever this creature attacks, defending player sacrifices a permanent of their choice.)
: Create two 0/1 colorless Eldrazi Spawn creature tokens. They have "Sacrifice this token: Add ."
: Cast any number of Eldrazi spells from among cards you own outside the game without paying their mana costs.