Bigger on the Inside + Retrofitter Foundry + Zirda, the Dawnwaker

RGW identity

Commander legal

The 3 combo pieces

• Bigger on the Inside
• Retrofitter Foundry
• Zirda, the Dawnwaker

What must be in place

Bigger on the Inside attached to Retrofitter Foundry.

How to execute it

1. Activate Retrofitter Foundry by tapping it, adding two mana of any color and causing the next spell you cast this turn to have cascade.
2. Activate Retrofitter Foundry's first ability by paying {1}, untapping it.
3. Repeat.
4. Once you have infinite mana, you may activate Retrofitter Foundry's other abilities.

What the combo produces

• Infinite cascade with mana value equal to the next spell you cast
• Infinite colored mana
• Infinite creature LTB
• Infinite creature tokens
• Infinite death triggers
• Infinite ETB
• Infinite sacrifice triggers