The Door of Destiny (Prismatic Secret Rare)

When an opponent's monster declares a direct attack: Negate the attack, then Special Summon this card as an Effect Monster (Fiend-Type/LIGHT/Level 1/ATK 0/DEF 0). (This card is also still a Trap Card.) During your Standby Phase, while this card is treated as a monster: You can banish any number of "Utopia" monsters with different names from your Graveyard, inflict 500 damage to your opponent for each of those banished monsters, and if you do, this card gains ATK equal to the damage they took.