yugioh poseidra deck Poseidra, the Storming Atlantean (Quarter Century Secret Rare) - Supreme Darkness Poseidra, the Atlantean Dragon SDRE-EN001

Hidden Fates Shiny Vault TypePokmon Collector NumberSV91 RarityRare Secret Artist5ban Graphics Attacks Horn Attack30 Nature's Judgment120+ You may discard all Energy from this Pokmon

As long as Jellicent is in the Active Spot, this ability prevents your opponent from using item cards or Pokmon Tool cards from their hand

MT 4/22: How does the in play template fit in

Eevee Sleeping on Snorlax Eevee naps peacefully on Snorlaxs belly in a sunny field with flowers

Your second example for properly summoned monsters does not work because it is not possible to attempt to Fusion Summon Sea Monster of Theseus outside of a chain, and you cannot use Solemn Judgment (or any card or effect that negates summons) to negate the Summon of a monster that was Summoned during a chain

A popular variant of this deck swaps out some Snake-Eyes cards for the Fire-King engine