Evocator

·noun One who calls forth.

evocator
ēvŏcātor, ōris, m. [evoco], one who calls to arms : servorum et civium perditorum, Cic. Cat. 1, 11...

A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.
evocator
ēvocātor ōris, m evoco, a summoner, recruiter, one who drums up civium perditorum. ...

An Elementary Latin Dictionary