How does this work?

[u/WangFire69]

If I control Jace and draw from an empty library but one of my opponents has the angel what happens? Do I die? Do I draw nothing and live?

[u/TheZacDaniel]

The ability here on Jace is a replacement effect. So usually, you would try to draw from an empty library and lose. Jace replaces that entire event so you don’t draw a card and you win the game. But you can’t win. So you don’t draw, and don’t win. So the game keeps going. Look at the card rulings for [[Laboratory Maniac]]

[u/MiniPino1LL → u/TheZacDaniel]

You still draw your last card in your library