Sorry to hear that, jc.
I usually just send out Haxorus on Baton Pass because of Lum Berry or get a Sub up with Zoroark against Smeargle. Most Baton Pass teams don't have Calm Mind or Amnesia users that particularly enjoy eating a STAB Dark Pulse.
Smash Pass on the other hand is a bit harder than that, but a U-Turn from Scizor then followed up by a Close Combat from Terrakion would take it down since Gorebyss only reaches 446 Speed at +2.
I've been trying out Offensive RS Donphan:
http://pokemon.aesoft.org/replay-TM87-vs-Katakiri--2012-05-03-private663812539
Man, I love Double Edge on Gyarados. Such great neutral coverage and raw power. Only 1/3 of my HP to OHKO something is definitely worth it.
I paired SpDefensive Jirachi and CB Dragonite with this version. Kind of Skarmory-weak but Donphan makes sure it can't do anything if Zoroark doesn't get to it first and weakness it with SE until I can EQ it on the Roost. Hell, Gyarados can get take it down with a lucky Waterfall flinch.
But anyway, I really like Donphan. I tried out Scarf Jirachi and I just felt it was kind of dead weight with having to use ThunderPunch. Fire Punch, Trick, & U-Turn are all far more useful outside of just hitting Gyarados, which most team's don't carry. Gyarados is important to check, but giving up a move-slot on a Pokemon for the sole purpose of beating him isn't optimal.
As I demonstrated in that replay, Donphan does exactly what we need him to; take down Dragons. I haven't had the balls to try Head Smash yet since I don't want Donphan going down if something brings him to Sturdy. If he can get just one more Ice Shard off even at 7% HP, I want to keep him around; just like in that last replay, one last Ice Shard was all I needed to win so it pays off. I've just been using Stone Edge; it gets the job done.
Jirachi nets me a Steel-type, a SR user, and a check for VoltTurn. I was mainly aiming for the anti-VoltTurn aspect, as Gyarados & Donphan aren't fans of Rotom-W, but SR definitely doesn't hurt and frees a slot for:
CB Dragonite. My secondary Volcarona check, VoltTurn check, priority user, sun counter, and a generally hard-hitter. With Donphan; Jirachi; and, to an extent, Gyarados checking Dragons, I saw no problems with adding Dragonite.
But yeah, Donphan's got my support. If you want to test out the Donphan version, it's just the onsite SpDef Jirachi & CB Dragonite sets with SR over Wish.