Is this allowed?

While that indicated a spectacular reaction time, the barrel was fully visible before she flashed.

Considering the flash was less then a .15 second after the barrel left bush it make me wonder..... But considering we have no idea if gragas is warded and the cast animation started about .5 seconds before flash makes it possible if they had gragas warded. If it is notscripting then it was insane reflexes.

So in other words not enough info to call it scripting.

Without vision I'd say so. There's no reliable way you could have those kinds of reflexes and catch the vision too, unless it was warded, outside of very few gifted people that wouldn't be anywhere below mid Diamond.

At the end of the video is Tristana's vision. To everyone stating "if Gragas was warded.." Gragas was not seen in that bush. It is a video from replay meaning if it was warded, it would've shown up. LIKE A BOSS.

I think i'm more or less wondering how she popped her ult without any animation of her what so ever showing/indicating she had turned around to shoot him back. Is that possible or am i just not aware? I don't play Trist.