Serena Deck Prototype

I'm currently planning to create a good Serena Deck, so I'll need your opinion to improve it! :)
So... here's the deck that I have in mind:

39 cards + Serena

Allies:

2x Nightshade
2x Agent Rex
2x Night Owl
3x Jasmine Rosecult
2x Aldon the Brave
2x Lily Rosecult
2x Raven Wildheart
2x Aeon Stormcaller

Abilities:
2x Bad Santa
2x Procured and Restored
3x Assassination
2x Treasured Heirloom
2x Smoke Screen
3x Stop, Thief!

Armor:
2x Black Garb
1x Gravedigger's Cloak
1x Spelleater Bands

Weapon:
4x Anklebreaker

Card Choices:
Agent Rex ->Deny an artifact from the opponent and use it at your advantage. (Additional draw artifacts most likely)
Nightshade -> Can set-up assassination. (same for Agent Rex)
Raven Wildheart -> Able to deal with strong shadow allies. (And she's beefy)
Lily Rosecult & Procured and Restored -> Take back Anklebreaker from the graveyard or whatever goodies from the opponent.
Gravedigger's Cloak -> Always good to have an extra draw or when an opponent's card in the graveyard can make big plays. (it's fun to beat the opponent with his own cards!)
Spelleater Bands -> Good to have against mages and Zaladar (Spells, come at me bro.)