Board Thread:Card Unit Builds/@comment-25376129-20140902021535/@comment-10117350-20140902025321

Hm, ok. For Campaign I suggest using: Since Hestia and Kawahime are the only AoE damage cards you have now, Urcaguary can be useful for stalling until either card can use their skill. If you can get Corvus this event (shouldn't be a problem), use her instead of Kawahime since she has better stats.
 * The Brute
 * Kawahime
 * Fairy Princess
 * Urcaguary
 * Urcaguary

Honestly though, you should medal Cyborg, Dragon Princess, Librarian and High Vampire (also, the R cards Detective, Sheet Ghost, Dark Mage and Knight. Sage too if you don't mind). Their skills aren't very useful and the medals you'll get from them can be used to max skills that will actually help you (Hestia and Polaris for example).

The EXP boost fom Librarian isn't useful, since using Slimes to level cards is way faster and easier. High Vampire's skill sounds good in theory, but she can easily be replaced by Emilia if you really want the 25% ATK boost, and Emilia can buff your cards even more (she's 3 procs).

You already have two very good cards for AW battles (Fairy Hime and Polaris) so that helps a lot. For now, your Archwitch team should be almost the same as the Campaign one: Again, Urcaguary will be used to stall the AW until Polaris procs. Then you use Hestia to attack the AW, and Fairy Princess' skill to help the whole team. (Use Fairy Princess to attack if her stats are better than Hestia's, but keep using Hestia's skill to deal damage.)
 * The Brute
 * Polaris
 * Fairy Princess
 * Urcaguary
 * Urcaguary

Sorry to say but that team won't be able to take down strong Archwitches, but it's the best you can do now assuming you can use them because of the Unit Cost.