Bolas's Citadel + Crookshank Kobolds + Mortuary + Phantom Train

BR identity

Commander legal

The 4 combo pieces

• Bolas's Citadel
• Crookshank Kobolds
• Mortuary
• Phantom Train

How to execute it

1. Activate Phantom Train by sacrificing Crookshank Kobolds
2. When Crookshank Kobolds dies, Mortuary triggers, putting Crookshank Kobolds from your graveyard onto the top of your library.
3. Resolve the Phantom Train ability.
4. Cast Crookshank Kobolds from the top of your library by paying 0 life.
5. Repeat.

What the combo produces

• Infinite +1/+1 counters on a creature
• Infinite creature LTB
• Infinite death triggers
• Infinite ETB
• Infinite sacrifice triggers
• Infinite storm count