Melira, Sylvok Outcast, Thunderblust, and Phantom Train

Prerequisites

• Melira, Sylvok Outcast on the battlefield
• Thunderblust on the battlefield
• Phantom Train on the battlefield

Steps

1. Activate Phantom Train by sacrificing Thunderblust
2. When Thunderblust dies, its persist ability triggers, returning it from your graveyard to the battlefield without a -1/-1 counter on it due to Melira
3. Resolve the Phantom Train ability Repeat

Results

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