Screams from Within, Phantom Train, and Quintorius, History Chaser

Prerequisites

• Screams from Within on the battlefield
• Phantom Train on the battlefield
• Quintorius, History Chaser on the battlefield

Steps

1. Activate Phantom Train by sacrificing the creature that has Screams from Within attached
2. When the creature dies, Screams from Within triggers, returning it from your graveyard to the battlefield attached to another creature you control
3. Quintorius, History Chaser triggers, creating a creature token
4. Resolve the Phantom Train ability
5. Repeat

Results

• Infinite +1/+1 counters on a creature
• Infinite ETB
• Infinite LTB
• Infinite death triggers
• Infinite sacrifice triggers