Massimo, the Magician, Aurelia, the Warleader, and Daydream

Prerequisites

• Massimo, the Magician in hand or in the command zone
• Aurelia, the Warleader on the battlefield
• Daydream in the graveyard
• plus commander tax if applicable available

Steps

1. Cast Massimo by paying its mana cost plus commander tax if applicable When Massimo enters, it triggers, exiling Daydream from your graveyard and giving Massimo the listed ability
2. Move to your next turn
3. Optionally, you can instead give Massimo haste
4. Declare Massimo and Aurelia as attackers
5. Aurelia triggers, untapping all creatures you control and causing you to get an additional combat phase after this one
6. Deal combat damage with Massimo
7. Its ability triggers, casting a copy of Daydream from exile without paying its mana cost
8. Resolve Daydream, blinking Aurelia
9. Repeat from step 4 each combat phase

Results

• Infinite combat damage
• Infinite combat phases
• Infinite creature ETB
• Infinite creature LTB
• Infinite magecraft triggers
• Infinite mana creatures you control can produce
• Infinite storm count
• Infinite untap of creatures you control