Dawnsire, Sunstar Dreadnought, Vigor, Crystalline Crawler, and Aggravated Assault

Prerequisites

• Dawnsire, Sunstar Dreadnought on the battlefield
• Vigor on the battlefield
• Crystalline Crawler on the battlefield
• Aggravated Assault on the battlefield

Steps

1. Declare any creature as an attacker
2. Dawnsire triggers, attempting to deal 100 damage to Crystalline Crawler, which will result in 100 +1/+1 counters being placed on it instead due to Vigor
3. Move to your postcombat main phase
4. Activate Crystalline Crawler's first ability five times by removing five +1/+1 counters from it, adding
5. Activate Aggravated Assault by paying , causing you to untap all creatures you control and to get an additional combat and main phase after this one
6. Repeat

Results

• Infinite colored mana
• Infinite combat phases
• Infinite untap of creatures you control
• Infinite mana creatures you control can produce
• Infinite +1/+1 counters