I drew this card...

https://arkhamdb.com/card/06100

attached it to this card...

https://arkhamdb.com/card/01062

then failed the test on this card...

https://arkhamdb.com/card/01167

I'm pretty sure I can discard the asset, which will presumably get rid of Treads of Reality also, saving an action. Am I right?

Sure.

If you discard a card, you also discard all cards attached to it. That should still hold true here; nothing on Threads of Reality prevents the attached card being discarded by other means.

41 minutes ago, Allonym said:

Sure.

If you discard a card, you also discard all cards attached to it. That should still hold true here; nothing on Threads of Reality prevents the attached card being discarded by other means.

Thanks, really confirms what I thought. For once, depending on the asset Threads of reality is attached to, it may be worth failng Crypt Chill.