Myr Welder, Encroaching Mycosynth, Empowered Autogenerator, and Merrow Wavebreakers

Prerequisites

• Myr Welder on the battlefield
• Encroaching Mycosynth on the battlefield
• Empowered Autogenerator in exile
• Merrow Wavebreakers in exile
• Myr Welder does not have summoning sickness
• (at most) available

Steps

1. Activate Myr Welder using Empowered Autogenerator's ability by tapping it, putting a charge counter on Myr Welder and adding for each charge counter on Myr Welder
2. Activate Myr Welder using Merrow Wavebreakers's ability by paying and untapping it, giving it flying until end of turn
3. Repeat

Results

• Infinite charge counters on Myr Welder
• Infinite colored mana