Leonin Relic-Warder, and Necromancy

Prerequisites

• Leonin Relic-Warder in the graveyard
• Necromancy in hand
• available

Steps

1. Cast Necromancy by paying , returning Leonin Relic-Warder from your graveyard to the battlefield, and attaching Necromancy to it
2. Leonin Relic-Warder enters the battlefield, exiling Necromancy
3. Necromancy leaves the battlefield, causing you to sacrifice Leonin Relic-Warder
4. Leonin Relic-Warder leaves the battlefield, returning Necromancy from exile to the battlefield
5. Necromancy enters the battlefield, returning Leonin Relic-Warder from your graveyard to the battlefield, and attaching Necromancy to it
6. Repeat from step 3

Results

• Infinite death triggers
• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers