Coercive Recruiter, Marrow-Gnawer, and Xenograft

Prerequisites

• Coercive Recruiter on the battlefield
• Marrow-Gnawer on the battlefield
• Xenograft on the battlefield
• Marrow-Gnawer does not have summoning sickness
• "Pirate" chosen with Xenograft
• You control at least one additional Rat

Steps

1. Activate Marrow-Gnawer by tapping it and sacrificing another Rat, creating at least one 1/1 Rat creature token
2. When the Rat enters the battlefield as a Pirate due to Xenograft, Coercive Recruiter triggers, untapping Marrow-Gnawer
3. Repeat
4. If you control at least two other Rats, this combo creates infinite additional Coercive Recruiter triggers, which can be used to untap any creature(s) infinitely and/or to gain control of any number of creature(s) until end of turn

Results

• Gain control of any number of creatures until end of turn
• Infinite creature tokens
• Infinite ETB
• Infinite mana creatures you control can produce
• Infinite untap of creatures you control