Kirri, Talented Sprout, Waves of Aggression, and Savage Ventmaw

Prerequisites

• Kirri, Talented Sprout on the battlefield
• Waves of Aggression in the graveyard
• Savage Ventmaw on the battlefield
• An opponent cannot block and kill Savage Ventmaw
• Savage Ventmaw does not have summoning sickness
• You have at least one land card in your graveyard

Steps

1. Declare Savage Ventmaw as an attacker
2. Savage Ventmaw triggers, adding
3. At the beginning of your postcombat main phase, Kirri triggers, returning a land card from your graveyard to the battlefield
4. Cast Waves of Aggression from your graveyard for its retrace cost by paying and discarding a land card, causing you to untap all creatures that attacked this turn, and to get an additional combat and main phase after this one
5. Repeat

Results

• Infinite combat phases
• Infinite green mana
• Infinite magecraft triggers
• Infinite red mana
• Infinite self-discard triggers
• Infinite storm count