just checked the cave again, there is 2 items princess shoes, which gives 15 rage and 2 atack, so far i dont have problems with rage, may be at late game, but not now, second is usurper ring, 5 intelect, but 30% less gold from battles, its nice but not right now too, i still need every coin i can get my hands on.
and for luck cave, sword can be upgraded if im right into runic sword, 2 atack and 2 intelect which isnt bad at all for a mage. and the xp from guardians, but thats when im in position to beat them ofc
that gremlin towers just rape me, and their hp is still way too high for me to take them down quick.