Rings of Brighthearth + Galvanic Key + Candelabra of Tawnos + High Tide

Prerequisites

• You control at least two Islands.

Steps

1. 1Cast High Tide by paying , causing all Islands to add an additional when they are tapped for mana this turn.
2. 2Activate two Islands you control by tapping them, adding .
3. 3Activate Candelabra of Tawnos by paying and tapping it.
4. 4Rings of Brighthearth triggers, causing you to pay to copy Candelabra of Tawnos' ability.
5. 5Resolve the first Candelabra of Tawnos ability, untapping the two Islands.
6. 6Activate two Islands you control by tapping them, adding .
7. 7Resolve the second Candelabra of Tawnos ability, untapping the two Islands.
8. 8Activate Galvanic Key by paying and tapping it.
9. 9Rings of Brighthearth triggers, causing you to pay to copy Galvanic Key's ability.
10. 10Resolve both Galvanic Key abilities, untapping Galvanic Key and Candelabra of Tawnos.
11. 11Repeat from step 2.

Effects

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