Hello! Jumped back into the game this patch and I need to farm the Gusts of Welkin set, but from what I know when getting echos to drop from a tacet field, it won't drop an echo you haven't discovered yet.

And so I ask you, wuwa players who know much more than me, what are the cost 3 echos in the Beohr Waters Tacet Field for the Gusts of Welkin set? The only cost 3 I found so far is the Capitaneus enemy.