Hatterene - Hatterene is one of the best Trick Room setters because it can't be Taunted, so it requires extra effort to prevent Trick Room. It also has a really good special attack and a spread move in Dazzling Gleam.
Dusclops - Dusclops doesn't have Magic Bounce, but it has so much bulk with Eviolite that it will most of the time pull off a Trick Room. It can also support with Will-O-Wisp, Ally Switch, and Helping Hand, but can also go on the offensive with Night Shade.
These are probably the two best Trick Room setters in VGC.
Hope this helped!