This brilliant setup hinges on Steward of the Harvest swallowing up Cabal Stronghold from your graveyard, granting its devastating mana-producing activated ability directly to the creature itself. By strapping Sword of the Paruns onto this land-gifted creature, you gain the means to both tap it for a massive flood of black mana and pay to untap it right back. The equipment's own stat buffs and activation costs loop seamlessly with the stolen land ability, generating infinite black mana and endless untaps for your entire board.