Arctursa, Grizzly Forebear

Arctursa, Grizzly Forebear enters the battlefield
with four +1/+1 counters on it.
Once during your upkeep, you may remove a
+1/+1 counter from Arctursa, Grizzly Forebear.
If you do, create a 2/2 green Bear creature token.
When Arctursa, Grizzly Forebear dies, Bears you control gain +2/+2 and trample until end of turn.