When this card is activated: Add 1 Uria, Lord of Searing Flames , Hamon, Lord of Striking Thunder , or Raviel, Lord of Phantasms , OR 1 monster that specifically lists any of those cards in its text, from your Deck to your hand. Once per turn: You can discard 1 card; Special Summon 1 Fiend monster with 0 ATK DEF from your GY. Once per turn, if you control a Level 10 monster: You can add 1 Continuous Spell from your GY to your hand. You can only activate 1 Opening of the Spirit Gates per turn.