Reaper King + Dread + Atla Palani, Nest Tender + Maskwood Nexus

Reaper King

Dread

Atla Palani, Nest Tender

Maskwood Nexus

How it works

1. Cause a creature to enter the battlefield under your control by any method.
2. When that creature enters the battlefield, Reaper King triggers, destroying that creature.
3. Resolve Atla Palani's trigger, revealing cards from the top of your library until you reveal a creature card and putting it onto the battlefield.
4. Repeat from step 2 until Dread enters the battlefield then dies, or until you choose to end the loop by destroying an opponent's permanent.
5. When Dread dies, it and Atla Palani trigger.
6. Resolve Dread's trigger, shuffling it into your library.
7. Continue from step 3.