Lae'zel, Vlaakith's Champion, Jace, Cunning Castaway, and Carth the Lion

Prerequisites

• Lae'zel, Vlaakith's Champion on the battlefield
• Jace, Cunning Castaway in hand
• Carth the Lion on the battlefield
• available

Steps

1. Cast Jace by paying
2. Jace enters the battlefield with four loyalty counters due to Lae'zel
3. Activate Jace's third loyalty ability by removing four loyalty counters from it
4. Jace dies as a state-based action due to having zero loyalty
5. Resolve the Jace ability, creating two non-legendary copies of Jace, which enter with four loyalty counters each due to Lae'zel
6. Repeat from step 3 using a Jace token
7. 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