Helios Duo Megistus - CP06-EN010 Rare Unlimited

You can Special Summon this card by Tributing 1 "Helios - The Primordial Sun". This card's ATK and DEF are equal to the number of removed from play monsters x 200. If this card is destroyed by battle and sent to the Graveyard, Special Summon it during the End Phase, and it gains 300 ATK and DEF.