Sunstrike Legionnaire, and Splinter Twin

Prerequisites

• Sunstrike Legionnaire on the battlefield
• Splinter Twin on the battlefield
• Splinter Twin attached to Sunstrike Legionnaire
• Sunstrike Legionnaire does not have summoning sickness

Steps

1. Activate Sunstrike Legionnaire by tapping it, creating a token copy of itself with haste
2. When the token Sunstrike Legionnaire enters the battlefield, each Sunstrike Legionnaire triggers, untapping themselves
3. Repeat

Results

• Infinite creature tokens with haste
• Infinite ETB