Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight + Umbral Collar Zealot + Relentless Skaabs

Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight

Umbral Collar Zealot

Relentless Skaabs

How it works

1. Activate Umbral Collar Zealot by sacrificing Relentless Skaabs
2. When Relentless Skaabs dies, its undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
3. Activate Umbral Collar Zealot by sacrificing Relentless Skaabs
4. When Relentless Skaabs dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
5. Resolve both Umbral Collar Zealot abilities from step 1 and 3.
6. Repeat.