Zen-Oh created a button ex nihilo that either: a.) instantly teleports Goku to his location, or b.) instantly teleports him to Goku's location... In any universe/timeline.
Zen-Oh also divined the outcome/wish of the ToP before it happened.
I think that's about all he has displayed aside from erasure, though.
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"I am tired of Earth. These people.
I am tired of being caught in the tangle of their lives."
Not sure exactly what was happening there, or how it was happening, but yeah, their chess match seemed to have a direct effect on the physical universe.
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"I am tired of Earth. These people.
I am tired of being caught in the tangle of their lives."
The argument stems from the fact that the word 全能—pronounced: Zen'nō—translates to omnipotent, and the that the limits to his power hasn't been specified.
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The problem with the argument is that "omnipotence" isn't a univocal term—despite what people want to believe.