Dominating Vampire, and Splinter Twin

Prerequisites

• Dominating Vampire on the battlefield
• Splinter Twin on the battlefield
• Splinter Twin attached to Dominating Vampire
• You control at least two vampires

Steps

1. Activate Dominating Vampire by tapping it, creating a token copy of Dominating Vampire with haste
2. The Dominating Vampire copy enters the battlefield targeting Dominating Vampire, untapping it
3. Repeat

Results

• Infinite creature tokens with haste
• Infinite ETB
• Infinite tap triggers