Battlemage's Bracers, Ilysian Caryatid, and Tidewater Minion

Prerequisites

• Battlemage's Bracers on the battlefield
• Ilysian Caryatid on the battlefield
• Tidewater Minion on the battlefield

Steps

1. Activate Ilysian Caryatid by tapping it, adding two mana of any color Activate Tidewater Minion by tapping it, targeting Ilysian Caryatid
2. Battlemage's Bracers triggers, causing you to pay to copy Tidewater Minion's ability, targeting Tidewater Minion
3. Resolve both Tidewater Minion abilities, untapping it and Ilysian Caryatid
4. Repeat

Results

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