Yes, there are protections against this. I'll see if I can get the blog updated with details. https://t.co/qSdmFFRXnl

Aiming to get an additional Q&A added to the blog tomorrow, with exact details. In the mean time, the short version is: If you are going to get the Tavern Pass, claim Diamond Samuro before opening packs.

I'm realizing now that I replied to several similar questions at the same time, and picked one to directly quote which was actually different. Pre-release weekend packs are different from pre-order legendaries. I'm still looking into early packs. My response was to pre-order leg.

@Celestalon Just to clarify - will he be removed from the free legendary pool? (both normal and golden for both preorders)

Apologies for the confusion on this; will get details on this asap in the morning when everyone is (virtually) in the office.

UPDATE: The blog has been updated (Q&A at the bottom) for details regarding these two legendaries and the pre-purchase legendary cards you get at login. Still looking into whether there's anything special for early pack opening during pre-release weekend.

Still working on getting details for this, haven't forgotten about this issue!

Hey, we've got a potential solution that we're working on, but won't have details to share until at least Monday. Sorry I don't have a definitive answer yet, but wanted you to know that we're working on it!