The lore of Dancers seems to dismiss a "Raise dance" existing in the Dancer Job's "Kriegstanz" school of dance. Necromancy was used to raise the undead and "Kriegstanz" was able to counteract it. If "Kriegstanz" dancers HAD a "Raise Dance", they would most likely have used it during the war.
An ability from that lore that WOULD fit Dancer is something that causes extreme damage to the undead.
Also, a "Dispel" ability would fit according to that lore too.
We could potentially get "Totentanz" as a method of raising dead party members as "pets" for a short time :p I kid... or do I? :)
(The lore can be found here:
http://wiki.ffxiclopedia.org/wiki/Da...he_Battlefield )