Colossal Skyturtle, Concordant Crossroads, Patron of the Orochi, Phantasmal Image, and Weaver of Harmony

Prerequisites

• Colossal Skyturtle in hand
• Concordant Crossroads on the battlefield
• Patron of the Orochi on the battlefield
• Phantasmal Image in your graveyard
• Weaver of Harmony on the battlefield
• You control Forests and/or green creatures that can tap to add

Steps

1. Tap Forests and/or green creatures to add at least
2. Pay and discard Colossal Skyturtle to activate its first activated ability, targeting Phantasmal Image
3. In response, pay and tap Weaver of Harmony to activate it, copying Colossal Skyturtle's ability and choosing Colossal Skyturtle as the target
4. Resolve all abilities, returning Phantasmal Image and Colossal Skyturtle to your hand
5. Tap Patron of the Orochi to activate it, untapping all Forests and green creatures
6. Pay to cast and resolve Phantasmal Image, having it enter as a copy of Patron of the Orochi
7. Put the original Patron of the Orochi into the graveyard due to the legend rule
8. Tap Forests and/or green creatures to add at least
9. Pay and discard Colossal Skyturtle to activate its first activated ability, targeting Patron of the Orochi
10. Pay and tap Weaver of Harmony to activate it, copying Colossal Skyturtle's ability and choosing Colossal Skyturtle as the target
11. Resolve all abilities, returning Patron of the Orochi and Colossal Skyturtle to your hand
12. Tap Phantasmal Image to activate it, untapping all Forests and green creatures
13. Sacrifice Phantasmal Image and pay to cast Patron of the Orochi for its snake offering cost
14. Repeat

Results

• Infinite colored mana
• Infinite ETB
• Infinite LTB
• Infinite storm count