Voltaic Key + Rings of Brighthearth + Five Hundred Year Diary

Prerequisites

• You control at least four Clues.

Steps

1. 1Activate Five Hundred Year Diary by tapping it, adding at least .
2. 2Activate Voltaic Key by paying and tapping it, targeting itself.
3. 3Rings of Brighthearth triggers, causing you to pay to copy Voltaic Key's ability, targeting Five Hundred Year Diary.
4. 4Resolve both Voltaic Key abilities, untapping it and Five Hundred Year Diary.
5. 5Repeat.

Effects

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