Vozrilar, Hidden Master

Shroud, Flying, Vozrilar can't be sacrificed
Vozrilar can't attack unless a player lost life this
turn.
At the beginning of each player's upkeep, they
surveil 3. Opponents lose 1 life for each card put
back on top of their library this way.
If an effect would target a opponent's library and
they have no cards left in their library, they lose
the game.