Okay, so Larvitar isn't the best lead. Stealth Rock is going to be important to your team if you want to make good use of Cyndaquil. While normally I suggest Dwebble (who is an awesome Pokemon), for this one I am going to suggest Pineco.
Pineco (M) @ Evolution Stone
Trait: Sturdy
EVs: 196 HP / 196 Def / 76 SDef
Impish Nature (+Def, -SAtk)
- Stealth Rock
- Spikes
- Rapid Spin
- Bug Bite
Stealth Rock and Spikes make things much more difficult for Houndour and Litwick, as well as any other Flash Fire users you find yourself up against. Rapid Spin protects you from Entry Hazards, which make things difficult especially for Cyndaquil.
If you want to get back in the tourney, you'll need to replace that Scraggy. I, of course, am suggesting Timburr.
Dokkora (M) @ Flame Orb
Trait: Guts
EVs: 76 HP / 196 Atk / 236 Def
Adamant Nature (+Atk, -SAtk)
- Mach Punch
- Drain Punch
- Payback
- Protect
If you don't care about the tournament, then you should still edit your Scraggy.
Zuruggu (M) @ Evolution Stone
Trait: Earthquake Spiral
EVs: 36 HP / 236 Atk / 212 Spd
Jolly Nature (+Spd, -SAtk)
- Dragon Dance
- Drain Punch
- Crunch
- Ice Punch
I have no idea if this set will be any good, but you might want to try this out for Bronzor.
Bronzor @ Evolution Stone
Trait: Levitate
EVs: 220 HP / 148 Def / 84 SAtk / 12 Spd
Bold Nature (+Def, -Atk)
- Hypnosis
- Psychic
- Calm Mind
- Flash Cannon
And this for Cyndaquil.
Cyndaquil (M) @ Choice Scarf
Trait: Flash Fire
EVs: 44 HP / 12 Def / 200 SAtk / 236 Spd
Modest Nature (+SAtk, -Atk)
- Flamethrower
- Eruption
- Extrasensory
- Hidden Power [Electric]
You could use Axew over Bagon, due to Axew having better offensive stats. Trade-off is a poorer movepool, but I think it worth it.
Kibago (M) @ Life Orb
Trait: Mold Breaker
EVs: 68 HP / 220 Atk / 220 Spd
Jolly Nature (+Spd, -SAtk)
- Outrage
- Dragon Dance
- X-Scissor
- Reversal
Finally, since Carvanha is allowed in the tournament, you might want to go for that over Oshawatt.
Carvanha (M) @ Life Orb
Trait: Speed Boost
EVs: 196 Atk / 76 SAtk / 236 Spd
Naughty Nature (+Atk, -SDef)
- Aqua Jet
- Crunch
- Ice Beam
- Protect