[1.2.340] Full Lionheart Castle

There is a quest where you have to kill them, the invincibility frames were pretty annoying.

It's a good thing they're ice resistant then, or else they'd make a lovely background decoration.
By the way, for the KoC thing, do you have to make a new one for it to count, or does it count if you already have one?
If it's the former, I'm gonna rage.