Aghanim's Scepter - Did you buy any wards at all? Provides a lot of stats that Crystal Maiden need and upgrades your expensive ultimate into a stronger expensive ultimate.Blink Dagger - If somehow you're able to survive teamfights to save up for this then great, a decent escape and an amazing initiation tool.Scythe of Vyse - Another expensive item that you'll probably never be able to get unless you're rolling in gold, adds an extra CC for both offensive and defensive purposes.Crystal Maiden isn't a good carrier for pipe since she's innately squishy and it's better to focus on buying wards or other items. Pipe of Insight - Quite expensive and if nobody else is getting for some reason, you buy it.
Helps you survive for 5 seconds longer against physical attacks but makes you much more susceptible to magic damage. If your team is dominating and you're raking in all the assist gold with some gank/accidental kills here are the items you'll want Luxury items for support heroes are hard to get since you'll have no farm and holds true for most supports.
