Restless Bivouac is a rare Land card from Wilds of Eldraine Promos (PWOE), collector number 257s. Current market price: — (foil $1.34), TCGplayer market prices via Scryfall.
This land enters tapped. {T}: Add {R} or {W}. {1}{R}{W}: This land becomes a 2/2 red and white Ox creature until end of turn. It's still a land. Whenever this land attacks, put a +1/+1 counter on target creature you control.