Ghave's Conspiracy

All Slivers have "Sacrifice this permanent: Add ."

As this enchantment enters, choose a creature type. Creatures you control are the chosen type. The same is true for creature spells you control and creature cards you own that aren't on the battlefield.

Whenever another green creature you control enters, put a +1/+1 counter on target creature.

Ghave enters with five +1/+1 counters on it. , Remove a +1/+1 counter from a creature you control: Create a 1/1 green Saproling creature token. , Sacrifice a creature: Put a +1/+1 counter on target creature.