Woe Strider + Glen Elendra Archmage + Hardened Academic

Woe Strider

Glen Elendra Archmage

Hardened Academic

How it works

1. Activate Woe Strider by sacrificing Glen Elendra Archmage.
2. When Glen Elendra Archmage dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
3. Hardened Academic triggers, putting a +1/+1 counter on Glen Elendra Archmage.
4. Resolve the Woe Strider ability.
5. Repeat.