With only Dragon Pulse, Skarm can Roost off the damage so you'll need to kill him first.
Of course I know Outrage locks you into play, I'm not stupid. I'm just saying it's a fair option, considering Bliss will always die to Draco Meteor + 2 Stealth Rock + Outrage unless she runs max Special Defence, and none of them run more than 216 or even 176. Stall is just that prominent. The problem is that without EVs it just doesn't hurt anything else much, so it'd be a bit of a last gasp.
I've been using Calm Mind Jirachi, and to say it's good is an understatement. Stall teams lacking Swampert tend to get taken down by a Flash Cannon or Psychic/Thunderbolt combo (Swampert will eventually fall to Psychic, but it's hard to get boosts against him because of EQ and Roar). Jirachi can easily come in on most Latios thanks to its resistance and high HP and it can also come in on the much-whored Scizor, set up a Sub and start sweeping. I've bumped its Speed up to 320 to beat neutral natured Latios, though (the most common). Jirachi can still beat Calm Blissey whatever the moveset unless it comes in on Thunder Wave, but it will need to get a Special Defence drop to garuntee the victory (and be in good health so S-toss isn't too much of a problem, other special attacks get walled badly after a few Calm Minds, even Flamethrower).