Kalonian Twingrove is a rare Creature — Treefolk Warrior card from Magic 2015 (M15), collector number 182. Current market price: $0.47 (foil $1.80), TCGplayer market prices via Scryfall.
Kalonian Twingrove's power and toughness are each equal to the number of Forests you control. When this creature enters, create a green Treefolk Warrior creature token with "This token's power and toughness are each equal to the number of Forests you control."