I think that there's an issue with how the rules work here, it would be better worded if it deployed a unit from the Available Units deck or the Aligned Units deck if one is not available from the Available Units deck. There may be an issue with phrasing, perhaps "Deploy an Available Unit" doesn't mean from the "Available Units Deck"? Maybe they forgot to put "Add 1 Taigha from the Aligned Units deck to the Available Units deck" at the start of turn 3. Seems to be another oversight. We deployed them at the end of the turn that "The Pit" is deployed according to it's "Horde" rule. However by not adding them to the "Available Units Deck" ever we basically had them keep spawning whenever "The Pit" was alive and then not spawning afterwards. I'm not gonna say this was correct in any way though. Would love to hear people's thoughts, or maybe a developer explanation. Something to also note is that this exact same thing occurs in Mission 4 (although a difference case as the taigha start deployed), Mission 5, 6, 7 and 8 as well.
