I have some good Exp with Ubers, and I'll tell you Blob will 6-0 you with this team. You need quite a few replacements.
Kyogre

Lets go more bulky. Switch Specs to Lefties. EVs are pretty good, but switch Spd into SDef. Hydro Pump is replaced by Rest.
I believe it may turn into Standard, but he dominates with it. Rest is reliable recovery. Thunder with Ice Beam gets Bolt-Beam. Kyogre has always been bulky enough to stay alive during Rest.
Ferrothorn

Meh, not too shabby. You might want Spikes over Bulldoze. If so, Rocky Helmet is more preferable.
Wobbuffet to Manaphy

Wobbuffet is not practical, plus very cheap.
Manaphy @ Leftovers
Trait: Hydration
EVs: 8 HP / 124 Def / 252 SAtk / 124 SDef
Modest Nature (+SAtk, -Atk)
- Tail Glow
- Ice Beam
- Rest
- Energy Ball / Surf
This set takes advantage of the rain, get started with Tail Glow. Follow up with Rest. Ice Beam + Rest spam. Nuffsaid.
Omastar to Kingdra

TehBaws (Kingdra) @ Choice Specs
Trait: Swift Swim
EVs: 128 Atk / 124 SAtk / 252 Spd
Naive Nature (+Spd, -SDef)
- Outrage
- Iron Head
- Ice Beam
- Draco Meteor
Do need to explain this? Swift Swim is double speed, and Kindra is a mixed super-sweeper. Kingdra is just much better due to having one weakness, easily covered by Ice Beam.
Garchomp

I really do not want to replace your whole team, and Garchomp doesn't benefit too much here, but oh well. Switch Ability for Rough Skin. Fire Blast over Brick Break for coverage. Switch DClaw for Dragon Tail to phaze, and Atk EVs to SAtk.
Lucario to Deoxys - A

Lucario is beyond too frail in Ubers.
Deoxys - A @ Life Orb
Trait: Pressure
EVs: 252 Atk / 4 SAtk / 252 Spd
Hasty Nature (+Spd, -Def)
- ExtremeSpeed
- Psyshock
- Return
- Thunderbolt
Good Luck against Blob. You better win, because I am looking forward to our battle.