>>22545923In practice it ultimately just means the Pokemon using it is slicing or hitting with a sword, arm or other similar object a couple of times extremely fast. It's Flying type because the technique itself is meant to be based off the movement of a swallow.
The reason it has perfect accuracy and ignores Acc/Eva buffs is similar to with FSNs version of the move (
>>22549033 ) where the slices are essentially so fast and coming from multiple directions that they're essentially unavoidable.
This is why things like Aggron can learn Aerial Ace. The Pokemon isn't flying or even doing anything in the air, it's just slicing with a long object multiple times extremely fast from different directions.
Of course, that doesn't explain why Diglett can do it, but that's a running joke
