Myr Welder, Staff of Domination, and Lavabrink Floodgates

Prerequisites

• Myr Welder on the battlefield
• Staff of Domination in the graveyard
• Lavabrink Floodgates in the graveyard
• Myr Welder does not have summoning sickness
• available

Steps

1. Activate Myr Welder by tapping it, exiling Staff of Domination from your graveyard
2. Activate Myr Welder using Staff of Domination's first ability by paying , untapping Myr Welder
3. Activate Myr Welder by tapping it, exiling Lavabrink Floodgates from your graveyard
4. Activate Myr Welder using Staff of Domination's first ability by paying , untapping Myr Welder
5. Activate Myr Welder using Lavabrink Floodgates's ability by tapping it, adding
6. Repeat from step 4

Results

• Infinite card draw
• Infinite lifegain
• Infinite lifegain triggers
• Infinite red mana