Myr Welder + Encroaching Mycosynth + Empowered Autogenerator + Merrow Grimeblotter

Prerequisites

• Myr Welder does not have summoning sickness.

Steps

1. 1Activate Myr Welder using Empowered Autogenerator's ability by tapping it, putting a charge counter on Myr Welder and adding or for each charge counter on Myr Welder.
2. 2Activate Myr Welder using Merrow Grimeblotter's ability by paying and untapping it, giving target creature -2/-0 until end of turn.
3. 3Repeat.

Effects

• Infinite charge counters on a permanent
• Infinite colored mana