Epic Battle of Champions!

At the beginning of your upkeep, you and target
opponent each choose a creature they control
that either has or is tied for highest power or
toughness.
They both gain Indestructible until end of turn,
then Fight.
When the fight ends, if a creature had suffered
lethal damage, its controller may destroy a target
artifact. Otherwise the creature gains Exalted
and Trample until end of turn.
"They cheered in awe."