Trollercoaster

Russian roulette (As this card enters the battlefield,
each player reveals the top card of their library. The
player who's card revealed this way with the largest converted mana cost loses the game.)
{t}: Each player swaps their library to the player
on their left.
{ut}: Each player swaps their battlefield to the
player on their right.
Libraries aren't swapped in this way.
{0}: Each player puts the top card of their
library on the bottom of their library.