Henrix said:The Attack action is described under Standard Actions, PHB p.139.
No, you cannot combine Spring Attack with other actions than an attack, which is a single attack.
Dervish Dance is a full round action and is definitely out of the question.
Scharlata said:Thanx alot for your opinions/clarifications.
... but: what good does the feat the dervish?
Kind regards

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.