Mikaeus, the Unhallowed + Krark-Clan Ironworks + Pith Driller

Mikaeus, the Unhallowed

Krark-Clan Ironworks

Pith Driller

How it works

1. Activate Krark-Clan Ironworks by sacrifiicing Pith Driller, adding CC.
2. When Pith Driller dies, its undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
3. When Pith Driller enters the battlefield, it triggers, putting a -1/-1 counter on it.
4. Repeat.

This elegant loop turns Mikaeus, the Unhallowed into a permanent engine of resurrection, granting its static undying buff to non-Human creatures like Pith Driller. Whenever Pith Driller enters the battlefield, its own ability forces a -1/-1 counter onto it, which neatly cancels out the +1/+1 counter it receives from undying so it can keep triggering the mechanic indefinitely. Meanwhile, Krark-Clan Ironworks converts this cycle of sacrifice into a steady stream of colorless mana, letting you bleed the engine for infinite resources.