Pir, Imaginative Rascal, Gemstone Array, and Doubling Season

Prerequisites

• Pir, Imaginative Rascal on the battlefield
• Gemstone Array on the battlefield
• Doubling Season on the battlefield
• available

Steps

1. Activate Gemstone Array's first ability by paying , putting four charge counters on it
2. Activate Gemstone Array's second ability twice by removing two charge counters from it, adding
3. Repeat

Results

• Infinite charge counters on Gemstone Array
• Infinite colored mana