Mortuary + Daxos, Blessed by the Sun + Carrion Feeder + Gwenom, Remorseless

Mortuary

Daxos, Blessed by the Sun

Carrion Feeder

Gwenom, Remorseless

How it works

1. Activate Carrion Feeder by sacrificing it.
2. When Carrion Feeder dies, Mortuary and Daxos trigger.
3. Resolve the Mortuary trigger, putting Carrion Feeder from your graveyard onto the top of your library.
4. Resolve the Daxos trigger, causing you to gain 1 life
5. Resolve the Carrion Feeder ability.
6. Cast Carrion Feeder from the top of your library by paying 1 life.
7. When Carrion Feeder enters, Daxos triggers, causing you to gain 1 life.
8. Repeat.