Krark-Clan Grunt, Lesser Masticore, and Serra Redeemer

Prerequisites

• Krark-Clan Grunt on the battlefield
• Lesser Masticore on the battlefield
• Serra Redeemer on the battlefield

Steps

1. Activate Krark-Clan Grunt by sacrificing Lesser Masticore When Lesser Masticore dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it
2. When Lesser Masticore enters, Serra Redeemer triggers, putting a +1/+1 counter on Lesser Masticore Resolve the Krark-Clan Grunt ability
3. Repeat

Results

• Infinite artifact ETB
• Infinite artifact LTB
• Infinite artifact sacrifice triggers
• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite death triggers
• Infinitely powerful creature until end of turn