Biscuit's Guide to Crystal Maiden

I don't know why, but most players do seem to overlook Arcane Aura for some unknown reason. Even if you're playing with mostly right click heroes, the extra 5 mana regen to you is nothing to scoff at. There are a couple reasons that I don't typically get Black King Bar or Aghanim's Scepter on CM though. Honestly, if you get to that point in the game where the 5 role support has 3900 gold lying around (after buyback), then the game more often than not is strongly in your favor and you just need to go win it. I think a much more useful on CM for late game would be Heaven's Halberd since it gives a.) twice the strength of BKB and Ag's, b.) has a disarm for those late game right clickers and c.) gives you a very nice 25% evasion chance, and d.) is even 50 gold cheaper than Black King Bar. I'll probably update my guide with this info.

Thanks for the reply =)

TL;DR - Don't overlook Arcane Aura and get Heaven's Halberd over other late game items

Love the guide! I especially like the early Arcane Aura max that other CMs tend to forget about. All I can really think of adding to it is maybe buying a late game Ogre Club to turn into a Black King Bar or Aghanim's Scepter to further combat her squishiness.