Unfortunately, that small ice cave has the item you need, so you'll have to deal with invisible enemies for that part. That's why fire rod is very helpful. Otherwise, if you get caught, use hammer to break out
Ice gibdo is immune to hammers, already tried.
Also, Magic Armor is beyond useless, thanks for it`s prohibitive magic drain rate ( more than 1/4 of magic PER HIT, 55% per hit w/o 1/2 magic upgrade), while providing "only" gold ring protection. Furthermore, it cannot be deactivated for sake of magic preservance, so it`s pretty much harmful permanent curse as soon as you open the chest containing it...
Edit: Where is the Magic Cape? Lensed all known lava-falls, near Level 4 and nope...
Edited by Alucard648, 19 June 2015 - 12:06 PM.