The perfect Maple boss fight

Even better, adding on to my last idea where the party member can betray his party members by attacking them, the party member could also make the boss regain hp with every attack that he does against the boss. So in other words, the party member would hurt his team mates, and help the boss regain hp.

Another skill that I would like to see a boss have would be the ability to target one player and set a type of "bomb" on them, and if the players do not destroy a certain monster or target in time, the player explodes (1HKO) and even damages his nearby party members greatly.