Sarkhan, Dragonslayer

+1: Target creature gets +1/+0 for each creature it has greater power than until end of turn
-3: Sacrifice a dragon you control. If you do create a non-legendary copy of Sarkhan, Dragonslayer with 5 loyalty
-4: Create a legendary 4/4 Red Dragon Creature named Sarkhan's Steed. It has Flying, and protection from Dragons and Humans.