I... want that to hit. And I could MAKE it hit. I could say that your cover doesn't count to the save since I'm sort of allowing it to reduce the possible effect.

But I'm going with the Stealth being the factor that makes evading entirely possible. And I'm willing to say you're in atleast half cover in your sniping position. Which entitles you not only to +2 to your AC, but also your Dex saves. So the tree you're next to is getting vaporized, but K'ral gets a +2.