An amusing quirk I noticed in battle with coven/dominance decks is that even if you steal the enemy down to negative height they'll keep fighting as normally even though they should of technically shrunk out of existance.
r2) the timid Maru has 20 match start hp even when over 2k height. Valeria always starts the match at 100 health regardless of her current height. I strongly suspect the enemy health height scaling is broken. An other oddity I noticed with valeria is that when you steal height from her you gain height and keep it but valeria reverts to her pre match height after the end of the match. It should be noted I did an easy mode run through.
r7) not only cruelty of fairy but also a fair number of dominance granting succubus cards which (also apply submissive to the enemy at the same time despite not saying so) all have that inactive submissive. It seems any card that grants dominance to you also grants an equal level of submissive to the enemy but the submissive doesn't do anything.