Ravisnek, Avatar of the End

Hexproof, Indestructible
When Ravisnek transforms exile each card from
each players library except for the bottom 5 cards
When an opponent would lose the game by
drawing a card when they have no cards in
their library, shuffle all of their cards from exile
into their library and gain control of their next
turn.
When you lose control of an opponent's turn
exile each card from each players library except
for the bottom 5 cards