Silverblade Paladin is a rare Creature — Human Knight card from Commander 2014 (C14), collector number 88. Current market price: $0.87, TCGplayer market prices via Scryfall.
Soulbond (You may pair this creature with another unpaired creature when either enters. They remain paired for as long as you control both of them.) As long as this creature is paired with another creature, both creatures have double strike.