Palladium Myr, Phyrexian Altar, Sedris, the Traitor King, and Void Maw

Prerequisites

• Palladium Myr on the battlefield
• Phyrexian Altar on the battlefield
• Sedris, the Traitor King on the battlefield
• Void Maw on the battlefield
• available

Steps

1. Activate Phyrexian Altar by sacrificing Palladium Myr, adding
2. Activate Palladium Myr's unearth ability by paying , returning it from your graveyard to the battlefield, giving it haste and exiling it at end of turn or when it leaves the battlefield
3. Activate Palladium Myr by tapping it, adding
4. Activate Phyrexian Altar by sacrificing Palladium Myr, adding
5. Both Palladium Myr's undying ability and Void Maw attempt to exile Palladium Myr when it would be put into your graveyard
6. Choose to apply the Void Maw replacement effect, exiling Palladium Myr
7. Activate Void Maw by putting Palladium Myr from exile into your graveyard, giving Void Maw +2/+2 until end of turn
8. Repeat from step 2

Results

• Infinite ETB
• Infinite LTB
• Infinitely large Void Maw until end of turn
• Infinite mill
• Infinite sacrifice triggers
• Infinite self-mill