Stalwart Successor, Viscera Seer, and Trapjaw Kelpie

Prerequisites

• Stalwart Successor on the battlefield
• Viscera Seer on the battlefield
• Trapjaw Kelpie on the battlefield

Steps

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

Results

• Infinite ETB
• Infinite LTB
• Infinite death triggers
• Infinite sacrifice triggers
• Infinite scry 1