Inaccurate?

Dancing Dragonmark

(Dragonmarked, p. 149)

Transmutation
Level: Bard 2,
Components: V, Dragonmark
Casting Time: 1 Standard Action
Range: Close (25ft. + 5ft./2 levels)
Target: Up to one dragonmarked creature per level, all within 30 ft of each other
Duration: Concentration
Saving Throw: Will negates
Spell Resistance: Yes

A creature affected by dancing dragonmark is nauseated.
If the target creature's dragonmark is one step more powerful than yours, that creature it gains a +2 bonus to its Will save. If the target creature's dragonmark is two steps more powerful than yours, that creature it gains a +4 bonus to its Will save.

Dragonmark: Any true or aberrant dragonmark.