Derevi, Empyrial Tactician, Emiel the Blessed, and Metalworker

Prerequisites

• Derevi, Empyrial Tactician on the battlefield
• Emiel the Blessed on the battlefield
• Metalworker on the battlefield
• Metalworker does not have summoning sickness
• You have at least two artifact cards in hand

Steps

1. Activate Metalworker by tapping it, revealing at least two artifact cards from your hand and adding at least
2. Activate Emiel by paying , blinking Derevi
3. When Derevi enters the battlefield, it triggers, untapping Metalworker
4. Repeat

Results

• Infinite LTB
• Infinite ETB
• Infinite colorless mana
• Infinite blinking
• Infinite mana permanents you control can produce
• Infinite untap of permanents you control