smite on horde, how does it work?

(psy rating + d10) or (just psy rating) hits?

thanx

It will do Psy Rating +1d10 hits as per rule on page 360.

Also take note that Smite has an area effect to it, so it could hit multiple Hordes in the area (area determined by the Effective Psy rating).

Yeah, Smite rocks