Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight + Iron League Steed + Phantom Train

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

Iron League Steed

Phantom Train

How it works

1. Activate Phantom Train by sacrificing Iron League Steed.
2. When Iron League Steed dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
3. When Iron League Steed enters, its fabricate ability triggers, putting a +1/+1 counter on it.
4. Resolve the Phantom Train ability.
5. Repeat.

This clever loop relies on the constant recycling of Iron League Steed to fuel Phantom Train's sacrifice ability, turning the Steed into an engine for endless deaths and enters-the-battlefield triggers. Thanks to the persist granted by the back side of Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight, the Steed bounces back from the graveyard with a -1/-1 counter, which is immediately canceled out by the +1/+1 counter from Iron League Steed's own fabricate ability. Because the Steed enters with no -1/-1 counters left on it, the loop can be repeated indefinitely to generate boundless triggers and pump up Phantom Train.