Myr Welder, Staff of Domination, and Worn Powerstone

Prerequisites

• Myr Welder on the battlefield
• Staff of Domination in exile
• Worn Powerstone in exile

Steps

1. Activate Myr Welder using Worn Powerstone's ability by tapping it, adding Activate Myr Welder using Staff of Domination's first ability by paying , untapping it
2. Repeat

Results

• Infinite card draw
• Infinite draw triggers
• Infinite lifegain
• Infinite lifegain triggers
• Infinite mana creatures you control can produce
• Infinite untap of creatures you control
• Infinite colorless mana