Celes, Rune Knight + Phantom Train

Celes, Rune Knight

Phantom Train

How it works

1. Activate Phantom Train by sacrificing the persist creature.
2. When the persist creature dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
3. When the persist creature enters the battlefield, Celes's second ability triggers, putting a +1/+1 counter on each creature you control.
4. Resolve the Phantom Train ability.
5. Repeat.

This clever loop is anchored by Phantom Train, which conveniently acts as a permanent sacrifice outlet that turns itself into an active creature. By feeding a creature with persist into the engine, you trigger its return from the graveyard to the battlefield. That graveyard-origin entry is the exact catalyst Celes, Rune Knight needs to trigger her second ability, blanking the creature's incoming -1/-1 counter with a fresh +1/+1 counter while flooding your board with endless enters-the-battlefield and sacrifice triggers.