Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight + Cayth, Famed Mechanist + Phantom Train

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

Cayth, Famed Mechanist

Phantom Train

How it works

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

This cunning loop turns the lifecycle of your mechanist into a perpetual engine of growth and sacrifice. With Eirdu, Carrier of Dawn transformed into Isilu, Carrier of Twilight, your nontoken creatures gain persist, allowing Cayth, Famed Mechanist to return from the graveyard with a -1/-1 counter whenever it meets its end. You feed Cayth directly into Phantom Train's activation cost, turning the Train into an animated creature while sending the mechanist to the graveyard. Upon its return, Cayth’s own fabricate 1 ability—granted to itself and amplified by Isilu's persistent blessing—places a fresh +1/+1 counter on the artificer, immediately neutralizing the -1/+1 counter and resetting the whole cycle for infinite sacrifices, triggers, and growth on the Train.