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

Prerequisites

• Zirda, the Dawnwaker on the battlefield
• Bigger on the Inside on the battlefield
• Retrofitter Foundry on the battlefield
• Bigger on the Inside attached to Retrofitter Foundry

Steps

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 , untapping it
3. Repeat
4. Once you have infinite mana, you may activate Retrofitter Foundry's other abilities

Results

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