Elemental Mastery, Coercive Recruiter, and Xenograft

Prerequisites

• Elemental Mastery on the battlefield
• Coercive Recruiter on the battlefield
• Xenograft on the battlefield
• Elemental Mastery attached to Coercive Recruiter
• Coercive Recruiter does not have summoning sickness
• "Pirate" chosen with Xenograft

Steps

1. Activate Coercive Recruiter by tapping it, creating at least four 1/1 Elemental creature tokens with haste
2. When the Elementals enter the battlefield as Pirates due to Xenograft, Coercive Recruiter triggers four times
3. Resolve the first three triggers, causing you to gain control of up to three other creatures and untap them
4. Resolve the last trigger, untapping Coercive Recruiter
5. Repeat
6. You may also repeat this during each of your turns to gain control of all creatures during your turn

Results

• Gain control of all creatures until end of turn during each of your turns
• Infinite creature tokens with haste
• Infinite ETB
• Infinite mana creatures you control can produce
• Infinite untap of creatures you control