Splinter Twin, and Sparring Mummy

Prerequisites

• Splinter Twin on the battlefield
• Sparring Mummy on the battlefield
• undefined

Steps

1. Activate Sparring Mummy by tapping it, creating a token copy of itself with haste
2. When the token Sparring Mummy enters the battlefield, it triggers, untapping the nontoken Sparring Mummy
3. Repeat

Results

• Infinite ETB
• Infinite creature tokens with haste