I've been playing a Souleater warlock and I got the distinct feeling that foes were saving too often against my "Devour the Soul" ability.
I looked for a brave volunteer, willing to let his soul devoured ... erm .... I mean .... willing to take part in a groundbreaking scientific experiment, and we stepped in a brawling pit.
Expected behavior:
according to the description, my DC should have been 18 + warlock levels (20) + CHA modifier (I was sitting at 24) = 62
Observed behavior:
we just ran a quick test; our brave volunteer saved with a 55, failed with a 52.
EDIT:
Ran a few tests on Lamannia.
The DC formula advertised in the spell description (18 + warlock levels + CHA modifier) looks completely off.
The actual DC seems to be 10 + spell level (6) + CHA modifier + anything that boosts Necromancy spells (gear, feats, enhancements, ED abilities).
More info here.
So, typo in the description or bug?