If you move into a dungeon tile and youre attacks aren't enough to kill the monster after resolving the 'before battle' ability.
Do you take a wound or nothing happens?
Ie. You have enough attack to defeat a monster, but the before battle ability says discard a random card. It happens a weapon was discarded, now it is not enough for you to defeat the monster. Do you take a wound?
You would take whatever damage the monster would inflict.