Oshi tried a lot of things but as soon as Elena used her absolutely broken Neutral Constant Singularity, she became immune. She obviously used a few moves which attacked Elena through time and tried to effect her before she had gotten this ability of her. But NCS was broken enough to stop even that.
Time was a very powerful force, so Oshi continued to try more time related method. But at the same time, she did not only depended on it and used a few other means too.
One another of her broken ability worked with the law of fate and it was the power to make the impossible to happen. So this fate related ability was able to make her zero percent chance of breaking Elena's invincibility to a perfect one hundred percent chance. So this obviously was an absolutely broken ability.
But even this ultimately failed. It turned out that even though both of these skills were supposed to be on the same tier and quality, the Neutral Constant Singularity had a higher priority.
