Mikaeus, the Unhallowed + Woe Strider + Twilight Shepherd

Mikaeus, the Unhallowed

Woe Strider

Twilight Shepherd

How it works

1. Activate Woe Strider by sacrificing Twilight Shepherd.
2. When Twilight Shepherd 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 Twilight Shepherd.
5. When Twilight Shepherd 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.