Adeline, Resplendent Cathar is a rare Legendary Creature — Human Knight card from Tarkir: Dragonstorm Commander (TDC), collector number 108. Current market price: $3.10, TCGplayer market prices via Scryfall.
Vigilance Adeline's power is equal to the number of creatures you control. Whenever you attack, for each opponent, create a 1/1 white Human creature token that's tapped and attacking that player or a planeswalker they control.