Mortuary, Bolas's Citadel, Accursed Centaur, and Vein Ripper

Prerequisites

• Mortuary on the battlefield
• Bolas's Citadel on the battlefield
• Accursed Centaur in hand or on the battlefield
• Vein Ripper on the battlefield
• available

Steps

1. Cast Accursed Centaur by paying its mana cost
2. When Accursed Centaur enters, it triggers, sacrificing itself
3. When Accursed Centaur dies, Mortuary and Vein Ripper trigger
4. Resolve the Mortuary trigger, putting Accursed Centaur from your graveyard onto the top of your library
5. Resolve the Vein Ripper trigger, causing you to gain 2 life and target opponent to lose 2 life Cast Accursed Centaur from the top of your library by paying 1 life
6. Repeat from step 2

Results

• Infinite creature ETB
• Infinite creature LTB
• Infinite death triggers
• Infinite lifegain
• Infinite lifegain triggers
• Infinite lifeloss
• Infinite creature sacrifice triggers
• Infinite storm count