Does Titania...

[Erevis Cale]

Have any effect on the underworld drops to get Carigan \, or does it have to be Morrigan?

[derkaiser]

You must wait until the sub quests to appear in order to use Titania.

[Erevis Cale]

So she works better for the drops on the subquests?

[solkyro]

no harm in using her

[Erevis Cale]

I hope she works cuz i just need 2 more swords for cardigan/

[icollyer]

It's been said that she has no effect because the drops are from the random encounters, not the quests.

That said, I've no hard info either way.