Old Man of the Sea [Arabian Nights] SM46 You can only use this

You can only use this effect of "El Shaddoll Shekhinaga" once per turn

Set: Dark Beginning 1 Card type: Effect Monster Rarity: Ultra Rare Attack: 2400 Defense: 1500 As long as this card remains face-up on the field

Set: Black & White: Legendary Treasures Type: Fire Rarity: Ultra Rare Retreat cost: Colorless

you may return that card to the battlefield under your control

Old Man of the Sea [Arabian Nights] SM46 You can only use thisSet: Arabian Nights Type: Creature Djinn Rarity: Rare Cost: {1}{U}{U} You may choose not to untap Old Man of the Sea during your untap step. {T}: Gain control of target creature with power less than or equal to Old Man of the Sea's power for as long as Old Man of the Sea remains tapped and that creature's power remains less than or equal to Old Man of the Sea's power.