I came across this building a legacy deck that contained The Black Cells (cost s1) in the house deck and The Battle of Blackwater Bay in the plot deck. The plot card effect is that when you win a military challenge you search your deck for an in-house locaton with printed cost 3 or lower and put it into play, then shuffle your deck. My question is:
1. Would I be able to choose The Black Cells, and
2. Would I put it into shadows, or skip that step and put it directly into play without it ever being in shadows?
I assume it's the latter, but I want to get a second opinion. It might be that a situation like this could come up in a non-legacy deck, but I haven't taken the time to flip through all my cards and check.