Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight + Woe Strider + Howlgeist

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

Woe Strider

Howlgeist

How it works

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

This clever loop uses the day side of Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight to grant persist to your nontoken creatures, which sets up a brilliant counter-canceling engine with Howlgeist's native undying ability. When you feed Howlgeist to Woe Strider's sacrifice outlet, it alternates between returning with a +1/+1 counter from undying and a -1/+1 counter from persist, with the two opposing counters instantly annihilating each other upon entry so the creature never gets locked out of the cycle.