Blissey needs 152 HP EVs and Sneasel needs 240 Speed EVs, and has to not evolve until Lv. 51 for Ice Shard. I'll get the Abomasnow to you in a bit, I just traded for it after I finished trading the two to you.
I already decided what Pokémon you'll have to EV train, but I still haven't RNGed one of them. I'll trade the Pokémon you need now, and later tonight I'm going to pass the other two.
Only one thing, I need Thundurus back because I can't clone, and you should clone the two Pokémon to EV Train as UT and give back them too (you can keep not redis copies though).
See you in 5 minutes on wifi.
Oh yeah, I need your FC and also which version do you want, UT or EV Trained (max SAtk/Spe, 4 HP)?