230s Serena Deck "Hot Mess" Needs Advice

After going on a Shadow Era hiatus 3 months ago, I've returned having successfully completed my first quarter at UCLA. I stopped playing shortly after the patch with all the new allies (marshland sentinel, armored sandworm, etc.) and SOOO much seems to have changed since then. I quickly created a rogue deck after seeing the new hero abilities and rogue weapons, and didn't do much research into how the most successful rogue/serena decks work. I owned everyone up until about rank 200, where I began running into trouble...without further ado, here's what I'm currently working with:

Hero: 1 card
1x Serena Thoughtripper

Allies: 26 cards
4x Kristoffer Wyld
3x Puwen Bloodhelm
2x Blake Windrunner
4x Jasmine Rosecult
2x Aldon the Brave
2x Tainted Oracle
2x Lily Rosecult
3x Raven Wildheart
3x Armored Sandworm
1x Aeon Stormcaller

Abilities: 7 cards
2x Assassination
4x Stop Thief!
1x Ill-Gotten Gains

Items: 9 cards
1x Good Ascendant
1x Gravedigger's Cloak
1x Crimson Vest
2x Golden Katar
4x Anklebreaker

Total: 43 cards

I know, I know, the deck is a hot mess at the moment...what should I do to rocket ol' Serena up to the 300s!? What's missing? Thanks for your time and feedback!

I'm sorry, but it's almost impossible to have a proper Serena deck that can maintain 300 rating.

It's true that your deck is messy and random but there's no much hope in Serena with the current meta if you want to reach over 270

Changes I would make:

- Serena

+ any warrior hero as you have cards for them already.