Silas, Tribal Leader

When Silas, Tribal Leader enters the battlefield put
X +1/+1 counters on it where X is the amount of
Sloths on the field.

Whenever another Sloth enters the battlefield put a
+1/+1 counter on Silas, Tribal Leader.

{g}, Remove a +1/+1 counter from Silas, Tribal
Leader: Put a +1/+1 counter on another target
Sloth creature.