Dynaheir, Invoker Adept, Grim Monolith, Pemmin's Aura, and Chromatic Orrery

Prerequisites

• Dynaheir, Invoker Adept on the battlefield
• Grim Monolith on the battlefield
• Pemmin's Aura on the battlefield
• Chromatic Orrery on the battlefield
• Pemmin's Aura attached to Dynaheir

Steps

1. Activate Chromatic Orrery's first ability by tapping it, adding
2. Activate Grim Monolith's first ability by tapping it, adding
3. Activate Dynaheir by tapping it, copying the next ability that you activate that costs at least four mana this turn
4. Activate Grim Monolith's second ability by paying
5. Dynaheir triggers, copying Grim Monolith's ability
6. Resolve the copy of Grim Monolith's ability, untapping it
7. Activate Grim Monolith's first ability by tapping it, adding
8. Resolve Grim Monolith's ability from step 4, untapping it
9. Activate Pemmin's Aura's first ability by paying , untapping Dynaheir
10. Repeat from step 2

Results

• Infinite colored mana
• Infinite colorless mana