Mishra, Eminent One, Dutiful Replicator, and Machine God's Effigy

Prerequisites

• Mishra, Eminent One on the battlefield
• Dutiful Replicator on the battlefield
• Machine God's Effigy on the battlefield

Steps

1. At the beginning of your combat phase, Mishra triggers, creating a token copy of the Machine God's Effigy (which is a copy of Dutiful Replicator), except it is a 4/4 Construct artifact creature with haste named Mishra's Warform
2. When Mishra's Warform enters the battlefield, its Dutiful Replicator ability triggers
3. Holding priority, activate Mishra's Warform using the Machine God's Effigy ability by tapping it, adding
4. Resolve the Mishra's Warform trigger from step 2, causing you to pay to create a token copy of Mishra's Warform
5. Repeat from step 2

Results

• Infinite ETB
• Infinite tapped creature tokens