Ao, the Dawn Sky + Mortuary + Stunt Double

Ao, the Dawn Sky

Mortuary

Stunt Double

How it works

1. Cast Stunt Double by paying its mana cost. Choose to have it enter the battlefield as a copy of Ao.
2. Put Stunt Double into your graveyard due to the legend rule.
3. When Stunt Double dies, it and Mortuary trigger.
4. Resolve the Mortuary trigger, putting Stunt Double from your graveyard onto the top of your library.
5. Resolve the Stunt Double trigger, causing you to look at the top seven cards of your library and put Stunt Double onto the battlefield as a copy of Ao.
6. Repeat from step 2.