Thanks! I got it! I tried flipping the orientation at first.
And getting Lucky Girl Regen just spawned a huge line of 2-s rising and fading from Brill's position. I guess because it only lasts 10 turns? Gonna go battle Defender's Rest Boss now.
Does his Dark Barrier never run out?? Oh, it lasts 3 hits. Not 3 turns. ... Eh, I'm too slow and stuff. Gonna take on the Hidden Library.