Phyrexian Metamorph + Technomancer + Yahenni, Undying Partisan
Phyrexian Metamorph
Artifact Creature — Phyrexian Shapeshifter
Technomancer
Artifact Creature — Necron Wizard
Yahenni, Undying Partisan
Legendary Creature — Aetherborn Vampire
Result
- Infinite artifact ETB
- Infinite artifact LTB
- Infinite artifact sacrifice triggers
- Infinite creature LTB
- Infinite creature ETB
- Infinite creature sacrifice triggers
- Infinite death triggers
- Infinite self-mill
- Put all artifact creature cards with mana value 2 or less from your library onto the battlefield
- Put all artifact creature cards with mana value 2 or less from your graveyard onto the battlefield
Combo data from Commander Spellbook.