Myr Welder, Voltaic Construct, and Nyx Lotus

Prerequisites

• Myr Welder on the battlefield
• Voltaic Construct in the graveyard
• Nyx Lotus in the graveyard
• Myr Welder does not have summoning sickness
• You have more than three devotions of one color
• available

Steps

1. Activate Myr Welder by tapping it, exiling Voltaic Construct from your graveyard
2. Activate Myr Welder using Voltaic Construct's ability by paying , untapping Myr Welder
3. Activate Myr Welder by tapping it, exiling Thran Dynamo from your graveyard
4. Activate Myr Welder using Voltaic Construct's ability by paying , untapping Myr Welder
5. Activate Myr Welder using Nyx Lotus's ability by tapping it, adding mana of that color equal to your devotion of that color
6. Repeat from step 4

Results

• Infinite colored mana