Frenetic Efreet, and Tavern Scoundrel

Prerequisites

• Frenetic Efreet on the battlefield
• Tavern Scoundrel on the battlefield

Steps

1. Activate Frenetic Efreet's ability an arbitrarily large amount of times by paying a total of
2. Resolve the first Frenetic Efreet ability, flipping a coin and either sacrificing Frenetic Efreet or causing it to phase out
3. If you win the flip, Tavern Scoundrel triggers, creating two Treasure tokens
4. Resolve the next Frenetic Efreet ability, flipping a coin and not phasing out or sacrificing Frenetic Efreet due to it no longer being on the battlefield
5. Repeat from step 3

Results

• Infinite colored mana
• Infinite Treasure tokens