Hi Maybe it's me not reading the card properly but for the pas couple of days, every time I cas an Acid Spray the target's armor does NOT get dissolved. Not only it prevents him from the 3 damage but it stays on his shoulders...
You can link cards: Acid Spray Then you can read them. The terrain becomes acid, if the target stays on the tile it discards the armor (and takes damage) on the beginning of the next turn. you can use Boiling Armor to discard them directly.