Devoted Druid + Fain, the Broker + Marvin, Murderous Mimic

BG identity

Commander legal

The 3 combo pieces

• Devoted Druid
• Fain, the Broker
• Marvin, Murderous Mimic

How to execute it

1. Activate Marvin using Devoted Druid's second ability by putting a -1/-1 counter on it, untapping it.
2. Activate Marvin using Fain's second ability by tapping it and removing a -1/-1 counter from it, creating a Treasure token.
3. Repeat.

What the combo produces

• Infinite +1/+1 counters on creatures you control
• Infinite colored mana
• Infinite creature LTB
• Infinite creature tokens
• Infinite death triggers
• Infinite ETB
• Infinite sacrifice triggers
• Infinite Treasure tokens