Kederekt Leviathan, and Necromancy

Prerequisites

• Kederekt Leviathan in the graveyard
• Necromancy in hand
• available

Steps

1. Cast Necromancy by paying
2. Necromancy enters the battlefield, returning Kederekt Leviathan from your graveyard to the battlefield attached with Necromancy
3. Kederekt Leviathan triggers, returning all nonland permanents to their owner's hands
4. Necromancy triggers, causing you to sacrifice Kederekt Leviathan
5. Repeat each turn

Results

• Return all nonland permanents to owner's hand each turn