D.D. King

All "D/D/D" monsters you control gain 500 ATK until the end of the turn. This Skill can only be used once per turn and twice per Duel. If you begin the Duel with a Deck/Extra Deck containing a total of 12 or more "D/D/D" monsters or "Dark Contract" Spell/Trap Cards, add Pendulum Zones to your field at the beginning of the Duel.