helios deck yugioh Yu-Gi-Oh! - Speed Duel GX: Duelists of Shadows Mint / near mint condition trading card Helios - The Primordial Sun

If your opponent Normal or Special Summons a monster(s) (except during the Damage Step), or if an opponent's monster targets this card for an attack: You can return this card to the Extra Deck, then, you can Special Summon 1 "Melffy" Xyz Monster from your Extra Deck

While it has been listed in the past for less, the highest transaction for this card was $2 million in 2013

Skip the Draw Phase of your next turn

From here, the potential is limitless

Blue-Eyes Ultimate Dragon - Super Rare in the Princeton Power booster, available after you clear Stages 2 and 3 of the game with Chazz, Jagger and Slade Princeton once each