Myr Welder + Biotransference + Empowered Autogenerator + Merrow Wavebreakers

Myr Welder

Biotransference

Empowered Autogenerator

Merrow Wavebreakers

How it works

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 1 and untapping it, giving it flying until end of turn.
3. Repeat.

This engine turns Myr Welder into a self-sustaining mana and counter factory once the key components are exiled. While Empowered Autogenerator grows larger with every loop to produce an escalating wave of mana, Merrow Wavebreakers provides the untap mechanism necessary to keep the chain going. To make this all function smoothly, Biotransference plays a vital structural role by ensuring Myr Welder counts as an artifact, allowing it to legally imprint and utilize the abilities of the other pieces from the graveyard.