Looks cool (although I question the "relatively cheap" part, since it's possible to build a great ELO deck for around 20k.)
Kusuri is a pretty obvious choice for that 2* slot though, isn't she? She can provide a little bit of DR which gives her great synergy with the Frozn. She is also an excellent bait card and threatens KO with a furied Tsubame.
I have tried Kusuri in a Fang Pi Clang half deck and I must say she is in my opinion a great 2* card that I recommend. I am not a pro but I got from 1,000 to 1,200 ELO with her in my deck in one afternoon, she works.
The Urban Rivals team is made by lovers of all kind of Collectibles Cards Games and Trading Cards Games like: Magic the Gathering, Dominion, Vampire, Yu-Gi-Oh!, Pokemon, Wakfu TCG, Assassin Creed Recollection, Shadow Era, Kard Kombat and Might & Magic Duel of Champions.