Melira, Sylvok Outcast, Trapjaw Kelpie, and Phantom Train

Prerequisites

• Melira, Sylvok Outcast on the battlefield
• Trapjaw Kelpie on the battlefield
• Phantom Train on the battlefield

Steps

1. Activate Phantom Train by sacrificing Trapjaw Kelpie
2. When Trapjaw Kelpie 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 ETB
• Infinite LTB
• Infinite death triggers
• Infinite sacrifice triggers