Stalwart Successor, Ashnod's Altar, and Scuzzback Marauders

Prerequisites

• Stalwart Successor on the battlefield
• Ashnod's Altar on the battlefield
• Scuzzback Marauders on the battlefield

Steps

1. Activate Ashnod's Altar by sacrificing Scuzzback Marauders When Scuzzback Marauders dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it
2. When Scuzzback Marauders enters, Stalwart Successor triggers, putting a +1/+1 counter on Scuzzback Marauders Repeat

Results

• Infinite ETB
• Infinite LTB
• Infinite colorless mana
• Infinite death triggers
• Infinite sacrifice triggers