Mikaeus, the Unhallowed + Woe Strider + Lingering Tormentor

Mikaeus, the Unhallowed

Woe Strider

Lingering Tormentor

How it works

1. Activate Woe Strider by sacrificing Lingering Tormentor.
2. When Lingering Tormentor dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
3. Resolve the Woe Strider ability.
4. Activate Woe Strider by sacrificing Lingering Tormentor.
5. When Lingering Tormentor dies, its undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
6. Resolve the Woe Strider ability.
7. Repeat.