I'm a level 15 cavalier in the Order of the Cockatrice archetyping as an Emissary (no banner ability). At level 16 I'll be taking one more point in charisma to give me a +4 (this is important). We will also be fighting the Grim Reaper (I know because my homegame rotates GMs and one of them added the Reaper as a story pusher but we intend to kill him because reasons). The problem, he has a fear aura with a dc 36 save and my base will save is only +3 (base 5, -2 wisdom).
Here is what I have or will get to bring myself up:
Base save+3
Potion of Owls Wisdom (and friend with the spell)+2
Friend with Eagle Splendor (+2 to charisma mod, again important)
Cloak of Resistance +5
Guarding weapon +5
Moment of Triumph +6 (adds my charisma mod to everything so with the extra +2 to charisma I get an extra +6)
Luck bonus +1
total-22
I'm looking into an ioun stone, wayfinder combination as well.
After this, I have nothing and am looking for help to increase my chances at not failing (We have a plan to do an absurd burst of damage from the beginning and disarm him in the process with my Mighty Charge but failure of this save pretty much ends this).
Sadly I won't be able to take Iron Will (strapped for feats) so I'm wonder what my other options are, any ideas?
Edit: I should probably note that on the team we have an Antipaladin and a magus. They both said that there isn't anything else they can offer but just in case there is something I guess it's worth mentioning.
