Barrenton Medic + Channeler Initiate + Necrotic Ooze

WBG identity

Commander legal

The 3 combo pieces

• Barrenton Medic
• Channeler Initiate
• Necrotic Ooze

What must be in place

Necrotic Ooze does not have summoning sickness.

How to execute it

1. Activate Necrotic Ooze using Barrenton Medic's second ability by putting a -1/-1 counter on it, untapping it.
2. Activate Necrotic Ooze using Channeler Initiate's ability by tapping it and removing a -1/-1 counter from it, adding one mana of any color.
3. Repeat.

What the combo produces

• Infinite colored mana