Valkyrion the Magna Warrior

[ Rock / Effect ] Cannot be Normal Summoned/Set. Must first be Special Summoned (from your hand) by Tributing 1 "Alpha The Magnet Warrior", "Beta The Magnet Warrior", and "Gamma The Magnet Warrior" from your hand and/or field. You can Tribute this card, then target 1 "Alpha The Magnet Warrior", "Beta The Magnet Warrior", and "Gamma The Magnet Warrior" in your Graveyard; Special Summon them. ATK/ 3500 DEF/ 3850