Bloodline Necromancer, Night of Souls' Betrayal, and Kaervek, the Spiteful

Prerequisites

• Bloodline Necromancer in hand
• Night of Souls' Betrayal on the battlefield
• Kaervek, the Spiteful on the battlefield
• available

Steps

1. Cast Bloodline Necromancer by paying
2. Bloodline Necromancer enters the battlefield and dies as a state-based action due to having zero or less toughness
3. Bloodline Necromancer enters the battlefield, returning itself from your graveyard to the battlefield
4. Repeat from step 2

Results

• Infinite ETB
• Infinite LTB