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If you do, during the End Phase: Send it to the Graveyard, then take damage equal to its ATK in the Graveyard

Of course a few newer cards become quite unusable with these blanket ex rulings in place, but you could consider it a worthwhile sacrifice, as a few cards becoming bad opens up thousands of other cards, old and new as playable options while keeping the rules relatively simple

Pink Horrors are a staple for spell decks now

The ability Whenever you discard a card is functionally identical to this ability

by flipping it face-down with "Magical Hats" between activations, its ATK becomes the sum of the two copied ATK values