Soulbright Seeker is a uncommon Creature — Elemental Sorcerer card from Lorwyn Eclipsed (ECL), collector number 157. Current market price: $0.21 (foil $0.30), TCGplayer market prices via Scryfall.
As an additional cost to cast this spell, behold an Elemental or pay {2}. (To behold an Elemental, choose an Elemental you control or reveal an Elemental card from your hand.) {R}: Target creature you control gains trample until end of turn. If this is the third time this ability has resolved this turn, add {R}{R}{R}{R}.