Magus of the Coffers, and Staff of Domination

Prerequisites

• Magus of the Coffers on the battlefield
• Staff of Domination on the battlefield
• Magus of the Coffers is not summoning sick and can tap for mana
• At least seven Swamps under your control
• to start the combo

Steps

1. Pay to activate Magus of the Coffers, adding at least seven
2. Pay to activate Staff of Domination's third ability, untapping Magus of the Coffers
3. Pay to activate Staff of Domination's first ability, untapping itself
4. Repeatedly tap the Magus for mana and untap it, generating at least per iteration

Results

• Infinite black mana