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Xyz Universe could send 2 opponents Xyz Monsters to Special Summon an Xyz Monster of an equal or 1 less of the combined original Rank

You know someone tried and found out the hard way that electricity and water do not mix

By discarding a random card to the grave, Jowgen can destroy all special summoned monsters and stop both players from special summoning new monsters

Introduced in Pokemon TCG set Temporal Forces, Buddy-Buddy Poffin allows you to search your deck for up to two Basic Pokemon with 70 HP or less, put them on your Bench immediately, then shuffle your deck

There are tons of ways to navigate these problems in the eternal formats, like Dark Ritual and Whip of Erebos