Agatha of the Vile Cauldron + Agatha's Soul Cauldron + Angry Rabble + Crystalline Crawler

RG identity

Commander legal

The 4 combo pieces

• Agatha of the Vile Cauldron
• Agatha's Soul Cauldron
• Angry Rabble
• Crystalline Crawler

How to execute it

1. Activate Crystalline Crawler using Angry Rabble's ability by paying {R}, putting two +1/+1 counters on it.
2. Activate Crystalline Crawler's first ability by removing a +1/+1 counter from it, adding {R}.
3. Repeat.

What the combo produces

• Infinite +1/+1 counters on certain creatures
• Infinite colored mana
• Infinitely large creatures you control until end of turn