Muhammad Ali, The Great

During your upkeep pay {x}, where {x} is equal to
the highest converted casting cost of all creatures
in play or bury Muhammad Ali, The Great.
If you paid the upkeep cost, determine the single highest power out of all creatures in play and in
all graveyards. Muhammad Ali's power becomes
one more than that. Do the same for Muhammad
Ali's toughness. Muhammad Ali all creature abilities of all creatures in play.