Bighorner Rancher is a uncommon Creature — Human Ranger card from Fallout (PIP), collector number 73. Current market price: $0.36 (foil $5.42), TCGplayer market prices via Scryfall.
Vigilance {T}: Add an amount of {G} equal to the greatest power among creatures you control. Sacrifice this creature: You gain life equal to the greatest toughness among other creatures you control.