Sigil of the New Dawn + Pitiless Plunderer + Phyrexian Altar + Memnite

Sigil of the New Dawn

Pitiless Plunderer

Phyrexian Altar

Memnite

How it works

1. Activate Phyrexian Altar by sacrificing Memnite, adding 1.
2. When Memnite dies, Sigil of the New Dawn and Pitiless Plunderer trigger.
3. Resolve the Pitiless Plunderer trigger, creating a Treasure token.
4. Activate the Treasure by tapping and sacrificing it, adding .
5. Resolve the Sigil of the New Dawn trigger, causing you to pay 1 to return Memnite to your hand from your graveyard.
6. Cast Memnite by paying 0.
7. Repeat.