Artifact
Whenever a Equipment is put into a graveyard from the battlefield, target player may pay X the colour of your choice mana, where X is the number of basic land types among lands an opponent controls. If that player does, put a charge counter on target untapped nonbasic land
W, T: put a charge counter on target basic land

Converted mana cost: 3

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AlexChurchill/TypeFourArtifactGenerator