Melira, Sylvok Outcast, Trapjaw Kelpie, and Bloodflow Connoisseur

Prerequisites

• Melira, Sylvok Outcast on the battlefield
• Trapjaw Kelpie on the battlefield
• Bloodflow Connoisseur on the battlefield

Steps

1. Activate Bloodflow Connoisseur 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 Bloodflow Connoisseur ability Repeat

Results

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