Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight + Phantom Train + Marionette Apprentice
Infinite LTB, Infinite ETB, Infinite sacrifice triggers, Infinite death triggers, Infinite +1/+1 counters on a creature, Infinite lifeloss
Activate Phantom Train by sacrificing Marionette Apprentice.
When Marionette Apprentice dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
When Marionette Apprentice enters, its fabricate ability triggers, putting a +1/+1 counter on it.
Resolve the Phantom Train ability.
Repeat.
Component Cards
How It Works
Activate Phantom Train by sacrificing Marionette Apprentice.
When Marionette Apprentice dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
When Marionette Apprentice enters, its fabricate ability triggers, putting a +1/+1 counter on it.
Resolve the Phantom Train ability.
Repeat.