Replicating Sq'ydra Clone

Reach, Trample
Replicating Sq'ydra Clone enters the battlefield with four +1/+1 counters.
Whenever a Squirrel creature enters the battlefield under your control, put a +1/+1 counter on Replicating Sq'ydra Clone.
They made himbs in a lab. Himbs has identical twin heads.