Flinthoof Boar is a uncommon Creature — Boar card from Eternal Masters (EMA), collector number 166. Current market price: $0.19 (foil $0.40), TCGplayer market prices via Scryfall.
This creature gets +1/+1 as long as you control a Mountain. {R}: This creature gains haste until end of turn. (It can attack and {T} this turn.)