[quote=@Natsucooldude]
[@Sionnie]

So, your post raised some questions for me. Firstly, what is this evasion roll? Is this some new rogue class feature in 5E?.

Secondly, this is a bit of advice for your writing style going forward. Try to avoid flavoring your attacks as if they were killing blows as you have no way of actually knowing whether your attacks were lethal that turn.
[/quote]

+1 this.

This is now difficult whether or not that 20 roll was valid.

[@Sionnie]I will suggest that you stop assuming what Rogues are capable to do and check how a rogue is normally played in D&D. You should also learn the basics of combat in tabletop D&D.