Kaya's Ghostform + Phyrexian Altar + Skullwinder

BG identity

Commander legal

The 3 combo pieces

• Kaya's Ghostform
• Phyrexian Altar
• Skullwinder

How to execute it

1. Activate Phyrexian Altar by sacrificing Skullwinder, adding {B}.
2. When Skullwinder dies, Kaya's Ghostform triggers, returning Skullwinder from your graveyard to the battlefield.
3. When Skullwinder 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 Skullwinder.
5. Repeat.

What the combo produces

• Infinite creature LTB
• Infinite death triggers
• Infinite ETB
• Infinite sacrifice triggers
• Infinite storm count
• Target opponent returns all cards in their graveyard to their hand