Make sure you don't mill yourself

Here is a PSA (Public Service Announcement) for group hug deck builders out there: make sure you don't mill yourself before you mill your opponent. This group hug deck is built around taking lots of extra turns.

I did not count, but I think my opponent took more than 5 extra turns.

And then was able to ultimate a baby Jace (Beleren, Lorwyn).

Here is another extra turn and Jace Beleren on the verge of an ultimate.

20 cards to my graveyard.

I get tapped, but my opponent has no cards left.

Exhaustion was the mode of extreme tapping.

But my opponent could have recovered their graveyard with an Elixir of Immortality... what happened?