Smogon Community - Sigilyph [WIP]

http://i.imgur.com/8UK1c.gif
Sigilyph

This bird got Heat Wave in BW2 which was a major positive for it, making the LO CM set that more potent. Boosting Sweeper is the same old affair, not immediately strong as LO Sigilyph but can be just as dangerous if left unchecked for too long, if not more so. I am very partial to Offensive Sigilyph and think it should be the primary set, but I'll leave it as is for the time being.

[Overview]

Magic Guard is awesome, even more so on a Flying-type
Passable Defenses
Awkward (but not in a bad way exactly) speed tier that lets it outspeed quite a few noteable threats such as Roserade, Nidoking, unboosted Yanmega, Houndoom, and Chandelure
Infamous Cosmic Powers
Common and exploitable weaknesses

[SET]
name: Boosting Sweeper
move 1: Cosmic Power / Calm Mind
move 2: Stored Power / Air Slash
move 3: Psycho Shift
move 4: Roost
item: Flame Orb
ability: Magic Guard
nature: Timid
evs: 252 HP / 136 Def / 120 Spe

[SET COMMENTS]

Takes a while to get going and is prone to crits (!)

[ADDITIONAL COMMENTS]

The given EV spread always avoids the OHKO from LO Mienshao's Stone Edge at +0 Def while outspeeding base 80 speed pokes and below

[SET]
name: Offensive Calm Mind
move 1: Calm Mind
move 2: Psyshock / Psychic
move 3: Air Slash
move 4: Roost / Heat Wave
item: Life Orb
ability: Magic Guard
nature: Timid
evs: 252 SpA / 4 SpD / 252 Spe
ivs: 0 Atk

[SET COMMENTS]

"What if CM Clefable was good?"

[ADDITIONAL COMMENTS]

0 Atk IVs let Sigilyph avoid the 2HKO from Foul Play

[Other Options]

Energy Ball fells Rhyperior in one swoop
Tinted Lens is a huge no, so is Wonder Skin (Magic Guard is this thing's main selling point)

[Checks and Counters]

Houndoom beats Boosting Sweeper, but is outsped and OHKOd after SR by Air Slash from Offensive CM
Sp.Def Rhyperior (avoid burns though)
Bronzong , Registeel, and Bisharp are decent vs. Offensive CM, but boosted Heat Waves will hurt, OHKOing in Bisharp's case
Stong SE moves, like Tbolt from Zapdos or Raikou will break it
Haze, Roar
Perish Song if you are very desperate

Comments / thoughts are welcome.

I guess this is mine