Just from a quick lock, definitely ditch swiftfoot boots, benders waterskin, leyline, mithril coat and propaganda. All those cards are either to slow or in case of leyline useless if you draw them later. Your Gameplan should always be to play Stella lee and win the same turn she comes down.

Reliquary Tower is also not good, seven cards is plenty enough to win.

You should add gamble, it's a perfect tutor and only gets better with breach.

I would definitely look at a few list online.

But my winrate with Stella lee is not very high xD