Maester Seymour + Crystalline Crawler + Aggravated Assault
Produces: Infinite colored mana, Infinite combat phases, Infinite untap of creatures you control, Infinite mana creatures you control can produce, Infinite +1/+1 counters on creatures you control
- Maester Seymour
- Crystalline Crawler
- Aggravated Assault
- Color identity
- RG
Steps
- At the beginning of your combat phase, Maester Seymour triggers, putting at least five +1/+1 counters on Crystalline Crawler.
- Move to your postcombat main phase.
- Activate Crystalline Crawler's first ability five times by removing five +1/+1 counters from it, adding {3}{R}{R}.
- Activate Aggravated Assault by paying {3}{R}{R}, untapping all creatures you control and causing you to get an additional combat and main phase after this one.
- Repeat.