hmm...all of them seem fairly powerful,but i always wanted this! after all i seem to have invisibility and precognition,in real life (it was kind of fun to be invisible at times since i can sneak up on people like a ghost and scare them) though,it would be cool to also have teleportation,telepathy and psychometry...i started to like that power from Zettai Karen Children and Toaru Kagaru no Railgun (and maybe Code E and Milky Holmes)

This was a hard one for me, cause i love all of them! Alchemy would be useful for repairing things, creating things etc, the dead man powers are lethal and could be great.. Not for killing or anything... Anyway the sword skills are cool but not that good, the esper powers sound cool, the death note would be great for saving the world and then the titan transformation... ITS BADASS! But i like the geass powers as they have different types of powers, you could stop time making sure you can get out of sticky situations, you could see what someone is about to do so that could help in a battle or sports, you could go into someone's body when your about to die and then take control of it, you could hear peoples thoughts... That's just awesome, you could alter peoples memories! You could make people love you! You could be immortal... And then my favourite... You can control people! Muhahahahaha!

Obviously this one (for me)!

I'm just choosing the elements of harmony, because I don't know the other powers