Mark Thanost

When Mark Thanost enters the battlefield,
shuffle "You, Know, What's, Right, Do, That,
You, Know, What's, Not, Right, Don't, Do,
That" randomly into opponents libraries.
{t}: Flip a coin for each band permanent.
On a heads, exile the creature until opponents
cast 8 different infinity words in tandem. On
a tails, do nothing.