Displacer Kitten, Molten-Core Maestro, Sanar, Unfinished Genius // Wild Idea, and Prosper, Tome-Bound

Prerequisites

• Displacer Kitten on the battlefield
• Molten-Core Maestro on the battlefield
• Sanar, Unfinished Genius // Wild Idea on the battlefield
• Prosper, Tome-Bound on the battlefield
• at most available

Steps

1. Cast the copy of the spell from exile by paying its mana cost
2. When you cast that spell, Molten-Core Maestro, Prosper, and Displacer Kitten trigger
3. Resolve the Displacer Kitten trigger, blinking Sanar, Unfinished Genius, which enters prepared
4. Resolve the Molten-Core Maestro trigger, putting a +1/+1 counter on it and adding an amount of equal to its power
5. Resolve the Prosper trigger, creating a Treasure token
6. Activate the Treasure token by tapping and sacrificing it, adding the one non-red mana you need to cast the spell from step 1
7. Resolve the spell from step 1
8. Repeat

Results

• Infinite +1/+1 counters on a creature
• Infinite ETB
• Infinite LTB
• Infinite magecraft triggers
• Infinite red mana
• Infinite storm count
• Put all instant and sorcery cards from your library into your hand