Battlemage's Bracers, Seeker of Skybreak, and Alena, Kessig Trapper

Prerequisites

• Battlemage's Bracers on the battlefield
• Seeker of Skybreak on the battlefield
• Alena, Kessig Trapper on the battlefield

Steps

1. Activate Alena by tapping it, adding at least Activate Seeker of Skybreak by tapping it, targeting Alena
2. Battlemage's Bracers triggers, causing you to pay to copy Seeker of Skybreak's ability, targeting Seeker of Skybreak
3. Resolve both Seeker of Skybreak abilities, untapping it and Alena
4. Repeat

Results

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