Armityle the Chaos Phantom (DUSA-EN099) - Duelist Saga 1st Edition

"Uria, Lord of Searing Flames" + "Hamon, Lord of Striking Thunder" + "Raviel, Lord of Phantasms"
Must first be Special Summoned (from your Extra Deck) by banishing the above cards you control. (You do not use "Polymerization".) This card cannot be destroyed by battle. This card gains 10,000 ATK during your turn only.