Sacrofism ritual

Choose one or more, (pay {p/b}{p/u}{p/g} for each
additional pick after the first):
. Each player loses half their life total, rounded
up.
. Each player exiles half the creatures he or she controls, rounded up.
. Each player puts the top half of their librery
into their graveyard, rounded up.
Each pick can be chosen up to three times.