Vedalken Squirrel-Whacker 

Creature — Vedalken Guest
As this creature enters, roll a six-sided die twice. Its base power becomes the first result and its base toughness becomes the second result. If you would roll one or more six-sided dice, instead roll them and you may exchange one result with this creature's base power or base toughness.
Legality
standardNOT LEGALpioneerNOT LEGALmodernNOT LEGALlegacyLEGALvintageLEGALcommanderLEGAL