Rek'Sai on Ascended

You can always use global TP ults to get out of the base instead of using your trinket, you just can't ult back into base, not even the enemy's base. Once out, you're out for good.

You can try it on yourself, it works with ult. And as I playd they abuse it a lot.

^ Just make a tunnel in base, get Ascended then ult yourself back into base. It's understandable as a good way to not die, if they want to get items without dying. But for those who just sit in the base so no one else can get it is mildly unfair.