Myr Matrix, Chromatic Orrery, Dross Scorpion, and Krark-Clan Ironworks

Prerequisites

• Myr Matrix on the battlefield
• Chromatic Orrery on the battlefield
• Dross Scorpion on the battlefield
• Krark-Clan Ironworks on the battlefield

Steps

1. Activate Chromatic Orrery's first ability by tapping it, adding
2. Activate Myr Matrix by paying , creating a 1/1 Myr artifact creature token
3. Activate Krark-Clan Ironworks by sacrificing the Myr, adding
4. The Myr dies, triggering Dross Scorpion, untapping Chromatic Orrery
5. Repeat
6. Once you have infinite mana, if you control a colored permanent, you may activate Chromatic Orrery's second ability instead to draw infinite cards

Results

• Infinite card draw
• Infinite colored mana
• Infinite colorless mana
• Infinite creature tokens
• Infinite death triggers
• Infinite draw triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers
• Infinite untap of artifacts