Myr Turbine + Battered Golem + Clock of Omens

Myr Turbine

Battered Golem

Clock of Omens

How it works

1. Activate Myr Turbine's first ability by tapping it, creating a 1/1 Myr artifact creature token.
2. The Myr enters the battlefield, triggering Battered Golem, untapping Battered Golem.
3. Activate Clock of Omens by tapping Battered Golem and the Myr token, untapping Myr Turbine.
4. Repeat.

This elegant loop transforms the humble Myr Turbine into a self-sustaining factory by leaning on Battered Golem and Clock of Omens to constantly reset its activation. Each time Myr Turbine taps to produce a Myr token, that artifact's entrance triggers Battered Golem to untap itself. From there, Clock of Omens uses the newly minted Myr token and the fresh-faced Battered Golem as its two tapped artifacts to untap Myr Turbine, putting the whole engine right back at the ready. Because the loop feeds itself infinitely without needing outside resources, you can flood the board with as many tapped creature tokens and enter-the-battlefield triggers as your heart desires.