Stalwart Successor, Viscera Seer, and Kithkin Spellduster

Prerequisites

• Stalwart Successor on the battlefield
• Viscera Seer on the battlefield
• Kithkin Spellduster on the battlefield

Steps

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

Results

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