Alright so I didn't see this set on here already, and I have spent all morning trolling people with it. This set supprts teams very well by spreading burns and shutting down opposing walls/stallers. Also, the EVs give Jellicent excellent mixed bulk, and the small speed investment allows Recover, Taunt, and Will-O-Wisp to be put to better use. Jellicent is quite possibly one of the trolliest bulky water types out there, and it serves to be a pain in the behind for quite a lot of things.
Like a sir :3 (Jellicent) @ Leftovers
Trait: Water Aborb/Cursed Body
EVs: 248 HP / 216 Def / 44 Spd
Bold Nature (+Def, -Atk)
- Shadow Ball/Scald
Recovery is for recovering, Shadow Ball is the attack of choice unless you are running it in the rain, Taunt screws oposing Blisseys, Ferrothorns, and other walls, while Will-O-Wisp cripples things such as Scizor, Toxicroak, and other physical sweepers.