Myr Welder, Staff of Domination, and Sarevok's Tome

Prerequisites

• Myr Welder on the battlefield
• Staff of Domination in exile
• Sarevok's Tome in exile

Steps

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

Results

• Infinite lifegain triggers
• Infinite lifegain
• Infinite card draw
• Infinite untap of creatures you control
• Infinite draw triggers
• Infinite mana creatures you control can produce
• Infinite colorless mana
• Cast all cards in your library without paying their mana costs