Ruby, Daring Tracker is a uncommon Legendary Creature — Human Scout card from Foundations (FDN), collector number 245. Current market price: $0.23 (foil $0.32), TCGplayer market prices via Scryfall.
Haste (This creature can attack and {T} as soon as it comes under your control.) Whenever Ruby attacks while you control a creature with power 4 or greater, Ruby gets +2/+2 until end of turn. {T}: Add {R} or {G}.