Sandaconda
- Shed Skin is decent
- Very high Defense and solid Attack
- Learns moves like Glare, High Horsepower, Iron Head, and Zen Headbutt
- Pretty slow
- Frail in terms of HP and Special Defense
Dragapult
- All three Abilities are very good
- Almost even attacking stats allow it to go mixed
- Extremely high Speed
- Learns moves like Dragon Darts, Thunderbolt, Flamethrower, U-turn, and Sucker Punch
- Very frail
- Obtained late
They're pretty different from each other. Use Sandaconda for a slow physical attacker, and Dragapult for a versatile, speedy and frail attacker.
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Sandaconda @ anything
Ability: Shed Skin
- High Horsepower / Earthquake
- Iron Head
- Fire Fang / Iron Head
- Glare
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Dragapult @ anything
Ability: any
- Dragon Pulse
- Shadow Ball
- U-turn
- Flamethrower
Hope I helped!