In general the DC of abilities of keyed of HD, however, the pixie, being a 1HD creature can give up this HD when taking class levels.

So how are the DCs calculated in this case?


The rules are inconsistent.

Different parts of the rules give different formulas for the DC of supernatural abilities.

The section on reading monster entries says:

When a special ability allows a saving throw, the kind of save and the save DC is noted in the descriptive text. Most saving throws against special abilities have DCs calculated as follows:

10 + ½ the attacker’s racial Hit Dice + the relevant ability modifier.

This matches the DCs given in most published monsters' stat blocks.

Meanwhile, the section on supernatural abilities and the Rules Compendium (p. 119) give the formula as:

10 + ½ the creature’s HD + the creature’s ability modifier (usually Charisma).

I don't know of any official resolution for this discrepancy; ask your DM which formula is being used in your game.

  • \$\begingroup\$ Also, that 1HD rule is not limited to humanoids, according to Savage Species (see sidebar, p.13). \$\endgroup\$ – martixy Mar 7 '18 at 20:15
  • \$\begingroup\$ @martixy Cool! Editing to correct answer. \$\endgroup\$ – A_S00 Mar 7 '18 at 20:22
  • \$\begingroup\$ The Rules Compendium does seem quite explicit about the DC of each type of ability - Ex, Su, and SLA. After some thought I've decided to apply some common sense in allowing that book to do it's job and not get overtly technical with the whole "primary sources" spiel. \$\endgroup\$ – martixy Mar 8 '18 at 0:18

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