The "Five-Point Palm Exploding Heart Technique" was one of Batwoman's bad jokes. It was really just an oversized set of brass knuckles forged from Promethium, usable even while wearing heavy armor. Different colors of natural Kryptonite were set into the five finger positions—red, yellow, blue, green, and purple. Its design concept was somewhat similar to the Infinity Gauntlet.
Naturally, this thing did not possess anything close to the Infinity Gauntlet's power. After all, it was a cold weapon made by humans; it merely served as a carrier for the Kryptonites.
Batwoman had made this thing, of course, to deal with Superman. If some Superman went mad for one reason or another, or invaded Earth-0 as a Parallel World counterpart, this thing could come in handy.
As mentioned before, Supermen from different universes feared different colors of Kryptonite. For example, the most famous Ultraman regarded the Green Kryptonite feared by Earth-0's Superman as a drug. One bite energized him, made him more addicted with every bite, and even enhanced his strength.
That was why the Five-Point Palm Exploding Heart Technique contained five types of Kryptonite. No matter which Superman it encountered, one of them would suit him.
Deathstroke had traded for this thing from Batwoman last time as part of their deal. It had originally been one of the contingencies prepared in case Superboy-Prime lost control, but it naturally worked just as well against Superman.
Unfortunately, Batwoman still was not dark enough. If Su Ming had made this sort of anti-Superman weapon himself, he would definitely have set Pink Kryptonite into it, achieving a near-guaranteed kill in most situations.
Pink Kryptonite could turn Superman gay. No matter which color of Kryptonite he originally feared, he could not resist Pink Kryptonite's effects. Once hit, wouldn't he immediately fall in love with the