Maybe the Rest-Talk set?
Hera@Leftovers
Adamant, Guts
204HP/152atk/152spd
Rest
Sleep Talk
Megahorn
Stone Edge
I see there's no Close Combat on this set unfortunately. However, maybe you could run Brick Break so your defenses won't fall. Anyway, Sleep will activate Guts, so the extra attack should help. Oh yeah, obviously, this will like...always wall Blissey.