Kellan, Planar Trailblazer is a rare Legendary Creature — Human Faerie Scout card from Foundations (FDN), collector number 330. Current market price: $0.31 (foil $0.73), TCGplayer market prices via Scryfall.
{1}{R}: If Kellan is a Scout, it becomes a Human Faerie Detective and gains "Whenever Kellan deals combat damage to a player, exile the top card of your library. You may play that card this turn." {2}{R}: If Kellan is a Detective, it becomes a 3/2 Human Faerie Rogue and gains double strike.