Doubling Season, and Jace, Cunning Castaway

Prerequisites

• Doubling Season on the battlefield
• Jace, Cunning Castaway in hand
• available

Steps

1. Cast Jace by paying
2. Jace enters the battlefield with six loyalty counters due to Doubling Season
3. Activate Jace's third loyalty ability by removing five loyalty counters from it, creating two nonlegendary copies of Jace that enter the battlefield with six loyalty counters each due to Doubling Season
4. Repeat step 3 using a Jace token
5. Once you have infinite Jace tokens, you may activate their second loyalty abilities by removing two loyalty counters from them, creating infinite 2/2 Illusion creature tokens

Results

• Infinite creature tokens
• Infinite ETB
• Infinite Jace, Cunning Castaway tokens