But instead of using the reverse side of the card like similar spells do nowadays, there was different text printed upside-down on the bottom of the card
During the End Phase, if this card is in the GY because it was destroyed in your Monster Zone by an opponent's card and sent there this turn: Special Summon this card from your GY, then, you can destroy cards your opponent controls, up to the number of face-up Spells/Traps you control with different names
As you search your library for one or more cards, you may choose Omnipresent Impostor as one of those cards
The creatures die, so give them indestructible with something like Eldrazi Monument, and while everyone else loses their dorks each turns, yours won't, so you could have a game-ending number of Zombies in just one go around the table
So far, we have seen a wide range of powerful decks come to fruition with each consecutive set released