Kaya's Ghostform + Phyrexian Altar + Timeless Witness

BG identity

Commander legal

The 3 combo pieces

• Kaya's Ghostform
• Phyrexian Altar
• Timeless Witness

How to execute it

1. Activate Phyrexian Altar by sacrificing Timeless Witness, adding {B}.
2. When Timeless Witness dies, Kaya's Ghostform triggers, returning Timeless Witness from your graveyard to the battlefield.
3. When Timeless Witness enters the battlefield, it triggers, returning Kaya's Ghostform from your graveyard to your hand.
4. Cast Kaya's Ghostform by paying {B}, attaching it to Timeless Witness.
5. Repeat.

What the combo produces

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