Barret, Avalanche Leader + Improvised Arsenal + Mana Echoes + Mycosynth Lattice

Mana needed: {11} at most

RG identity

Commander legal

The 4 combo pieces

• Barret, Avalanche Leader
• Improvised Arsenal
• Mana Echoes
• Mycosynth Lattice

How to execute it

1. Activate Improvised Arsenal by paying {5}, creating a token copy of it.
2. Barret triggers, creating a creature token.
3. When the creature token enters, Mana Echoes triggers, adding {C} for each creature you control that shares a creature type with the creature token.
4. Repeat.

What the combo produces

• Infinite colored mana
• Infinite colorless mana
• Infinite creature tokens that are infinitely powerful
• Infinite ETB
• Infinitely powerful creatures you control