Ambessa Guide

Tips for Playing Against Ambessa

-Her Q does a ridiculous amount of percent max health damage. You'll have to be careful of that throughout the game, and I would completely avoid fighting her when it's up.
-If she uses Q on waveclear you have a window to try and mess her up, but be careful as the cooldown goes down to like 10s without ability haste at rank 5, and the CD starts on cast.
-Her ult is her only form of immobilizing CC, and it isn't easy to hit, so sometimes you can play a bit risky if they don't have a jungler that can CC/catch you. Just make sure you know if you need to keep W up to get out.

Iceborn Gauntlet

Iceborn is probably a decent option. I haven't tried it, but the idea is that it gives you a little bit of survivability with armor vs her max HP, while also giving enough health and making it so she has trouble escaping if you can beat her.
Swiftness Boots

Swifties! I love Swifties! I almost always take Swifties anyways, but it's really nice for being able to keep distance from her, or run her down if she messes up.
Heartsteel

Heartsteel jumpscare. I know she does a lot of %HP damage, but I think if you're careful this item is great anyways if you can stay even or ahead, especially if they have squishy targets you can pop elsewhere.