We could have a mode for PvP where two teams will fight a boss (King Krogmo Maybe).
Team X will deal damage on the boss until it's hp has reached 0%.
Team Y's damage on the boss will heal it instead.
Team X will have a certain time limit to defeat the boss whilst Team Y must stop the boss from dying until the time limit is reached.
Both teams can attack each other and kill each other.
The boss's weakness to certain damage types and strengths changes randomly.
The statuses that the boss inflicts is also random.
Team X will have extra damage/def bonus because they have to attack the boss and Team Y.
Egpnd: Maybe have 2 rounds so that the attackers get to defend.
Maybe have 2 rounds so that the attackers get to defend.
But, +/- 0 /e lets other players cast their vote.