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

but let me show you what someone with real power can create

Championship Series Prize Cards Card type: Xyz/Effect Monster Rarity: Ultra Rare Attack: 2000 Defense: 2000 2 Level 4 monsters During either player's turn

then target 1 Defense Position monster on the field

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.