Artifact - Equipment
Equip X green mana, where X is the number of poison counters an opponent has
When ~this~ is put into a graveyard from the battlefield, target player may pay X red mana, where X is the number of Thopters an opponent controls. If that player doesn't, up to three target nonblue creatures gain ''All Thopters can't be the target of spells and activated abilities'' until end of turn
Whenever equipped creature leaves the battlefield, up to four target white enchantments are artifacts in addition to their other types until end of turn

Converted mana cost: 5

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AlexChurchill/TypeFourArtifactGenerator