Myr Welder, Staff of Domination, and Five Hundred Year Diary

Prerequisites

• Myr Welder on the battlefield
• Staff of Domination in exile
• Five Hundred Year Diary in exile

Steps

1. Activate Myr Welder using Five Hundred Year Diary's ability by tapping it, adding at least
2. If Staff of Domination is exiled, activate Myr Welder using Staff of Domination's first ability by paying , untapping it
3. Otherwise, activate Staff of Domination's third ability by paying and tapping it, untapping Myr Welder
4. Then, activate Staff of Domination's first ability by paying , untapping it
5. 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 blue mana