Thunderscape Master is a rare Creature — Human Wizard card from Invasion (INV), collector number 175. Current market price: $0.35 (foil $6.92), TCGplayer market prices via Scryfall.
{B}{B}, {T}: Target player loses 2 life and you gain 2 life. {G}{G}, {T}: Creatures you control get +2/+2 until end of turn.