Olivia, Mobilized for War + Weatherlight Compleated + Phantom Train

Olivia, Mobilized for War

Weatherlight Compleated

Phantom Train

How it works

1. Activate Phantom Train by sacrificing the persist creature.
2. When the persist creature dies, it and Weatherlight Compleated trigger.
3. Resolve the Weatherlight Compleated trigger, putting a phyresis counter on it and causing you to draw a card.
4. Resolve the persist creature's trigger, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
5. When the persist creature enters the battlefield, Olivia triggers, putting a +1/+1 counter on the persist creature and causing you to discard a card.
6. Resolve the Phantom Train ability.
7. Repeat.

This loop transforms a persist creature into an endless engine by leveraging Phantom Train as a dedicated sacrifice outlet that constantly feeds it back into the graveyard. Each time the creature returns, Olivia, Mobilized for War steps in with her triggered ability to discard a card and slap a +1/+1 counter on it—which immediately neutralizes the creature's incoming -1/-1 counter through state-based actions. Meanwhile, every sacrifice triggers Weatherlight Compleated to accumulate phyresis counters, rapidly digging through your deck with infinite scry and draw triggers as the cycle repeats.