Voltaic Key + Forsaken Monument + Rings of Brighthearth + Dreamstone Hedron

Prerequisites

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Steps

1. 1Activate Dreamstone Hedron by tapping it, adding .
2. 2Forsaken Monument triggers, adding .
3. 3Activate Voltaic Key by paying and tapping it, targeting itself.
4. 4Rings of Brighthearth triggers, causing you to pay to copy Voltaic Key's ability, targeting Dreamstone Hedron.
5. 5Resolve both Voltaic Key abilities, untapping it and Dreamstone Hedron.
6. 6Repeat.

Effects

• Infinite colorless mana
• Infinite mana artifacts you control can produce
• Infinite untap of artifacts you control