Orvar, the All-Form, Clockspinning, and Harmonic Prodigy

Prerequisites

• Orvar, the All-Form on the battlefield
• Clockspinning in hand
• Harmonic Prodigy on the battlefield
• You control a nonlegendary permanent that enters the battlefield untapped and that can tap to produce at least
• available

Steps

1. Cast Clockspinning with buyback by paying , targeting Harmonic Prodigy
2. Orvar triggers twice and Harmonic Prodigy triggers once
3. Resolve the Harmonic Prodigy trigger, giving it +1/+1 until end of turn
4. Resolve the Orvar triggers, creating two token copies of Harmonic Prodigy
5. Resolve Clockspinning, returning it to your hand
6. Cast Clockspinning with buyback by paying , targeting Harmonic Prodigy
7. Orvar triggers four times, and each Harmoic Prodigy triggers three times
8. Resolve all Harmonic Prodigy triggers, giving each Harmonic Prodigy +3/+3 until end of turn
9. Resolve all Orvar triggers, creating four token copies of Harmonic Prodigy
10. Resolve Clockspinning, returning it to your hand
11. Cast Clockspinning with buyback by paying , targeting any nonlegendary permanent you control that enters the battlefield untapped and that can tap to produce at least
12. Orvar triggers eight times, and each Harmonic Prodigy triggers seven times
13. Resolve all Harmonic Prodigy triggers, giving each Harmonic Prodigy +7/+7 until end of turn
14. Resolve all Orvar triggers, creating eight copies of the mana-producing permanent
15. Resolve Clockspinning, returning it to your hand
16. Activate four of the copies of the mana-producing permanent by tapping them, adding at least
17. Repeat from step 11

Results

• Infinite copies of permanents you control
• Infinite creature tokens
• Infinite ETB
• Infinite landfall triggers
• Infinitely large creatures until end of turn
• Infinite magecraft triggers
• Infinite mana permanents you control can produce
• Infinite storm count