Bolas's Citadel + Mortuary + Phantom Train + Shield Sphere

B identity

Commander legal

The 4 combo pieces

• Bolas's Citadel
• Mortuary
• Phantom Train
• Shield Sphere

How to execute it

1. Activate Phantom Train by sacrificing Shield Sphere
2. When Shield Sphere dies, Mortuary triggers, putting Shield Sphere from your graveyard onto the top of your library.
3. Resolve the Phantom Train ability.
4. Cast Shield Sphere 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