What you were expecting to happen, and what actually happened:
I was expecting the new troop specifically advertised to help me in the new delve event to help me in any way. Burning Ocularen can’t be used at all in its delve, neither for regular runs nor for pure faction runs, because it doesn’t use blue or green mana, the colors the delve is restricted to.
How often does this happen?
Way too often. I mean, an entirely unusable troop as the main event shop feature? I do hope this receives a real fix instead of the ever popular “works as intended” treatment, because the intent here would be difficult to see as anything but malicious.
Steps to make it happen again
Ignore a pile of baffled community feedback for over a month, while it was still time to fix the issue.
Steps to make it happen again (Extended Version)
“Keep using programmers who do not play the game, coupled with mods who are not dedicated enough to keep an eye out for early warnings given by the players”
You’d think that there would be a super easy fix to this problem. You program delves to either allow A) troops which are restricted to blue/green mana, or B) troops which are from All-Seeing Eye kingdom. Done. That way it allows for using Pure Faction troops which don’t fit that color scheme. I guess that was put in the too hard file unless it just got lost in the shuffle like so much else.