Scuzzback Marauders, Bloodflow Connoisseur, and Hardened Academic

Prerequisites

• Scuzzback Marauders on the battlefield
• Bloodflow Connoisseur on the battlefield
• Hardened Academic on the battlefield

Steps

1. Activate Bloodflow Connoisseur by sacrificing Scuzzback Marauders
2. When Scuzzback Marauders dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it
3. Hardened Academic triggers, putting a +1/+1 counter on Scuzzback Marauders
4. Resolve the Bloodflow Connoisseur ability
5. Repeat

Results

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