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These artifacts have built-in medallion effects, allowing spells of the corresponding colour to cost one less mana to cast

Supermagic Sword of Raptinus X SPELL Equip At the start of the Battle Phase: You can change the equipped monster's battle position, and if you do, immediately after this effect resolves, Normal Summon 1 monster

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It cannot counter an ability and may not target the Command itself

The problem is: any experienced Pokemon TCG Pocket player has one or various methods to counter this

But throw in Dross Scorpion to the mix and we can now untap the Throne each time we activate it, meaning infinite proliferate