Consider the following: +1 racial bonus on saving throws against powers, spells, and spell-like effects. Can someone think of anything already in ToEE that has that sort of ability that I can copy?
Dwarves have a "+2 racial bonus on saving throws against spells and spell-like effect" per SRD. I don't know how this is coded into ToEE, though.
Well, a +2 cloak of protection gives a +2 saving throw benefit to the primary saves, you could use that I guess. Or maybe take a look at how the Globe on invulnerability is scripted. :shrug:
Bit of a gap between Invulnerability and +1 on the Save. Almost certainly can't set him up as a Dwarf so let me rephrase the question: let's say I just give a monster +1 on his saves for everything. Monster turns up in boss fight, hilarity ensues. Can anyone think of any scenario (other than 'monster get's dominated and follows party around for any number of events' - unlikely as he has a +1 save against that ) where the bonus is going to kick in against anything other than a spell etc? Unless the party have dominated a dragon and brought him along, would any PC have anything to bring to the table other than spells and spell-like effects?
Most of the PC's offensive abilities that require a saving throw are spells or spell-like abilities. The only exceptions I can think of are the Stunning Fist feat and the 15th-level Monk's Quivering Palm ability.