Illusionist's Bracers, Fyndhorn Brownie, and Karametra's Acolyte

Prerequisites

• Illusionist's Bracers on the battlefield
• Fyndhorn Brownie on the battlefield
• Karametra's Acolyte on the battlefield
• Illusionist's Bracers attached to Fyndhorn Brownie
• Fyndhorn Brownie and Karametra's Acolyte do not have summoning sickness
• Your devotion to green is at least four

Steps

1. Activate Karametra's Acolyte by tapping it, adding at least Activate Fyndhorn Brownie's ability by paying and tapping it, targeting itself
2. Trigger Illusionist Bracer's, copying Fyndhorn Brownie's ability targeting Karametra's Acolyte Resolve both Fyndhorn Brownie abilities, untapping it and Karametra's Acolyte Repeat

Results

• Infinite green mana
• Infinite untap of creatures you control
• Infinite mana creatures you control can produce