Rashel, Fist of Torm is a rare Legendary Creature — Human Knight card from Universes Within (SLX), collector number 24. Current market price: $14.21, TCGplayer market prices via Scryfall.
Double strike Auras you control have exalted. (Whenever a creature you control attacks alone, it gets +1/+1 until end of turn for each instance of exalted among permanents you control.)