You would need to sacrifice Toxic's slot for Zap Cannon. A pursuitless umbreon couldn't possibly convince a Starmie to stay in. Even then, it'd have to be a pretty quick team to really benefit from the momentary paralysis. And by BL, you mean...? Charizard/Druidcruel? As far as Jolteon goes, I've tried Agility/Baton Pass/HP Water/Substitute. People expect every jolteon to pack tbolt to the point that they wouldn't even consider switching in Suicune/Skarmory/whatever. And because Jolteon's time is usually shortlived, that one misprediction on their end could definitely swing the battle in your favor. Along the same lines, Snorlax doesn't necessarily have to run BS/Return/Double Edge. In fact, something like EQ/FB/LK/SD could work a lot better than your standard LK/SD lax, and it's the set I run on some of my older teams. And the thing about Rest/Pain Split/Destiny Bond missy is that it has absolutely no reliable method of carrying out perish songing in the face of a phazer.