Donal, Herald of Wings, Cloudstone Curio, and Palinchron

Prerequisites

• Donal, Herald of Wings on the battlefield
• Cloudstone Curio on the battlefield
• Palinchron in hand
• You control up to seven lands that can tap to produce at least
• You have not copied a spell with Donal this turn
• available

Steps

1. Cast Palinchron by paying
2. Donal triggers, creating a copy of the Palinchron spell that is a 1/1 Spirit in addition to its other types
3. The copy of Palinchron enters the battlefield, triggering itself and Cloudstone Curio
4. Resolve the Palinchron trigger, untapping up to seven lands that can tap to produce at least
5. Resolve the Cloudstone Curio trigger, returning Donal from the battlefield to your hand
6. Activate seven lands by tapping them, adding at least
7. Resolve the original Palinchron spell from step 1
8. Palinchron enters the battlefield, triggering itself and Cloudstone Curio
9. Resolve the Palinchron trigger, untapping up to seven lands that can tap to produce
10. Resolve the Cloudstone Curio trigger, choosing not to return anything to your hand
11. Cast Donal by paying
12. Donal enters the battlefield, triggering Cloudstone Curio, returning Palinchron from the battlefield to your hand
13. Activate seven lands by tapping them, adding at least
14. Repeat

Results

• Infinite creature tokens
• Infinite ETB
• Infinite LTB
• Infinite mana lands you control can produce
• Infinite storm count