Stalwart Successor, Bloodflow Connoisseur, and Thunderblust

Prerequisites

• Stalwart Successor on the battlefield
• Bloodflow Connoisseur on the battlefield
• Thunderblust on the battlefield

Steps

1. Activate Bloodflow Connoisseur by sacrificing Thunderblust When Thunderblust dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it
2. When Thunderblust enters, Stalwart Successor triggers, putting a +1/+1 counter on Thunderblust Resolve the Bloodflow Connoisseur ability
3. Repeat

Results

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