Knight of Bladed-wings

Reveal a Dragon card from your hand: Knight
of Bladed-wings gets +1/+1 and "Whenever a creature dealt damage by Knight of Bladed-wings this turn dies put a 2/2 black Zombie creature token onto the battlefield" until end of turn, you may only use this ability once every turn.
The Bladewing dragons make thralls of the knights who came to slay him, then released them back to ravage their kingdoms and turn their people to slaves