The Colosseum

The player who drew this card becomes the Monarch.
At the beginning of the Monarch's untap step, they
may force two target creatures to fight. This effect
cannot be negated or prevented.
CHAOS: when Chaos Ensues, shuffle all creatures
all players control into one pile in the middle of the
table, face down.
the Monarch may pay {5} to draw the top card
and cast it.
If the location changes, then all the remaining
cards in the deck are diverted to their owners