Coercive Recruiter, Thraben Doomsayer, and Arcane Adaptation

Prerequisites

• Coercive Recruiter on the battlefield
• Thraben Doomsayer on the battlefield
• Arcane Adaptation on the battlefield
• Thraben Doomsayer does not have summoning sickness
• "Pirate" chosen with Arcane Adaptation

Steps

1. Activate Thraben Doomsayer by tapping it, creating a 1/1 Human creature token
2. When the Human enters the battlefield as a Pirate due to Arcane Adaptation, Coercive Recruiter triggers, untapping Thraben Doomsayer
3. Repeat

Results

• Infinite creature tokens
• Infinite ETB