Elvish Branchbender is a common Creature — Elf Druid card from Lorwyn (LRW), collector number 204. Current market price: $0.21 (foil $1.00), TCGplayer market prices via Scryfall.
{T}: Until end of turn, target Forest becomes an X/X Treefolk creature in addition to its other types, where X is the number of Elves you control.