Scurry Oak 172 (Modern Horizons 2)

Evolve (Whenever a creature you control enters, if that creature has greater power or toughness than this creature, put a +1/+1 counter on this creature.) Whenever one or more +1/+1 counters are put on this creature, you may create a 1/1 green Squirrel creature token.

NM - $4.70
LP - $3.80
MP - $2.80
HP - $1.90
DMG - $1.00