Xenosquirrels 

Creature — Alien Squirrel
This creature enters with two +1/+1 counters on it. After you roll a die, you may remove a +1/+1 counter from this creature. If you do, increase or decrease the result by 1.
Legality
standardNOT LEGALpioneerNOT LEGALmodernNOT LEGALlegacyLEGALvintageLEGALcommanderLEGAL