Captain Storm, Cosmium Raider + Lesser Masticore + Arcane Adaptation + Phantom Train

Captain Storm, Cosmium Raider

Lesser Masticore

Arcane Adaptation

Phantom Train

How it works

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

This fascinating loop transforms Phantom Train into a relentless engine by utilizing its ability to sacrifice Lesser Masticore to grow itself into a creature. Because Arcane Adaptation redefines your entire team as Pirates, Lesser Masticore naturally satisfies the criteria for Captain Storm, Cosmium Raider to reward every single entry with a +1/+1 counter. That fresh influx of power conveniently cancels out the -1/+1 counter from Lesser Masticore's persist trigger when it returns from the graveyard, allowing the whole sequence to repeat endlessly.