Just for fun, name some broken abilites
Izanagi (Naruto): It can rewrite reality, that is broken, but not so much because it has limitations and risks
The sharingan in general. At first it was just aided perception and a bonus to Genjutsu... which make sense for an ocular ability. Then they gave it all the abilities of the byakugan, then they made it spit sun hot fire, then they let it teleport people throughout space, then they made it suck things into a vacuum, then they made it give people a purple soul skeleton shield that blocks any attack, then they gave it Inazagi that you mentioned, then they let it make people intangible... and I'm probably forgetting some powers and I'm sure more are going to come.
Tsuki-something from the Fullbring arc has the ability to time travel instantly, alter the past based off of the present, teleport back to the present and take advantage of the changes made, all without creating any type of paradox or time rift.
Aizen's shikai is beast mode unstoppable as well.
-Light Hawk Wings (Tenchi Muyo)- The most broken defense I've seen in fiction. Capable of tanking anything up to a universal level from energy attacks to localized space phenomena such as black holes.
-Gae Bolg (Fate/Stay Night)- Lancer's Noble Phantasm. The weapon ignores cause and effect to always strike a fatal blow at its opponent's heart whenever Lancer desires it.
-Gate of Babylon (Fate/Stay Night)- One of Gilgamesh's Noble Phantasms. Essentially a dimensional gate that holds Gil's "treasury" of every Noble Phantasm he has collected throughout history. Each weapon has various different effects and properties where Gil likes to spam them like arrows and fire them at his foe. Gil used Gate of Babylon to easily defeat Berserker in the UBW arc of Fate who was considered the biggest threat in the Holy Grail War.
-Mystic Eyes of Death Perception (Kara no Kyoukai)- Shiki Ryougi's ability to perceive the "death" of living beings and concepts by seeing them in the form of lines. By cutting these lines with a sharp object like a knife, Shiki is capable of annihilating whatever she cuts, whether it be an inanimate object, a ghost or the concept of distance.
@Dream: -Magic of Resurrection (Umineko no naku koro ni)- Ange's abilitie to resurrect stuff when their existance is negated, to put an example, if Shiki were to kill a concept, it becames a perfect elimnation beyond inmortality, and stuff like that, however Magic of Resurrection can even revive things eliminated in that way
Endless Magic (Beatrice, Eva Beattrice, Ushiromiya Battler; Umineko no naku koro ni): The ability to recreate something infinite times, like for example, killing someon infinite times, by killing him/her, reviving him /her, then killingk him/her again, etc. Also it can be used to destroy, and reconstruct an object; or to recreate a situation infinite times, etc.
@MohsinMan99:Not, we're no voting, we are posting abilites that we think that are broken
@DawnToDarkness: That pretty much happens with all the sucky abilties of shonen's protagonist; here you must put an ability, that you think that is broken, by its principle, effect, etc. Not only because it beats everybody, that's boring