Artifact
As long as an opponent controls a Golem, Imprint — When ~this~ enters the battlefield, exile a basic land card in your hand. (The exiled card is imprinted on this artifact.)
4WW: add two mana of any colour of mana the imprinted card could produce to your mana pool

Converted mana cost: 4

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AlexChurchill/TypeFourArtifactGenerator