Ketu Dracotail (OP29-EN003) - OTS Tournament Pack 29 Unlimited

Add 1 "Dracotail" monster from your Deck to your hand, then if your opponent controls a monster, you can Fusion Summon 1 Dragon or Spellcaster monster from your Extra Deck, using monsters from your hand or field. You can only activate 1 "Ketu Dracotail" per turn.