[cim]

I'm just wondering, what does 216 Speed hit? I think it's something like Jolly base 80s. Do we really need that much? Isn't 196 Speed for neutral 90's okay as a max Jolly Base 80 Pokémon isn't terribly common?

I'm thinking that Taunt Gyarados doesn't really do much to Suicune; I mean doesn't it need like 6 DD's to be a threat? Gyarados is so over-hyped anyway that I really don't think a OHKO is necessary on him. I mean, it's not a good idea to let him DD 6 times, but other Pokémon can handle him and Gyarados will want to Taunt him early.

I've found with Substitute + Calm Minders like Jirachi, I always used relatively bulky spreads to make the Substitute harder to break. For Jirachi, I used 252 / 220 Def / 36 Spe Bold or something. Since Suicune has 30 more points in Defense than Jirachi and 20 less Special Attack, this might not be as necessary, especially since the first priority should be beating Calm Blissey. The Special Attack needs to be high enough to beat 176 SDef Calm Blissey after 6 CM's. Anyway, here's some spreads:

252 HP / 40 SpA / 216 Spe; Timid beats all Base 80 Pokémon, but only does 37-43% to Calm Blissey.

252 HP / 104 SAtk / 152 Spe; Modest outspeeds Jolly Tyranitar and does around 43-51% to Calm Blissey.

252 HP / 176 SAtk / 80 Spe; Modest outspeeds Adamant Tyranitar by 2 points and does around 46-55% to Calm Blissey.

Keep in mind that with Pressure sapping away Thunderbolt and Seismic Toss PP (to 12 and 16 respectively), Suicune will pretty much beat Blissey all the time, especially because 99% of people play without event moves now and thus there's no Protect stalling. A single critical hit from Surf's 24 PP means Blissey loses. Once Blissey is gone, you get to watch your opponent attempt to beat a +6 Calm Minded Water type. Only SD Tentacruel can do that, really.

Every spread will beat Bold Blissey.