HELP! The (failed) Assault on General Karador's Necro-Castle

[Fate]

Originally Posted by Palinius

BTW as i remember when i won the fight there was an item that i bought in the castle (maybe it was some other place but i think it was that castle)...the item name is PAIN SKULL and it also have a 2nd lvl called DEAD SKULL, i cant simply upgrade it. There is something like: Power of Spell : 100% and im guessing from the info when i will use the item in many fights and it feed itself with my mana (steals 50% of mana every fight) the power will go to 0% and i will be able to upgrade it.
So my questions are:
1. Do it really needs to be used till 0% of power of spell when it can be upgraded?
2. What are the Stats of the DEAD SKULL? (is it even worth to try to get it)
2.I noticed that 1 fight lowered 2% of the power. Do i need to fight 50x to take it to 0%? Im a mage i cant afford that.

I got the item too and manage to upgrade it. The % drop more as it get lower so it is less than 50 battles but the upgraded version is worth it. It has +5att and +5int with no penalties.