Breeding
Gen 5
Sandshrew
Sandslash
Farfetch'd
Teddiursa
Ursaring
Torchic
Combusken
Blaziken
Slakoth
Vigoroth
Slaking
Zangoose
Seviper
Shinx
Luxio
Luxray
Oshawott
Dewott
Samurott
Cubchoo
Beartic
Heatmor
Get a Female Oshawott Dewott or Samurott.
You can get on by mating Oshawott Dewott or Samurott with a Ditto and keep hatching eggs until you get a female one. (but you only have 12.5% chance of getting it.)
Then breed it with any of the above Male Pokemon. It has to know Night Slash.
Then hatch an Egg for the results.
The Oshawott should know Night Slash
Absol learns the move Night Slash at level 41. Absol also learns the Psychic type version of Night Slash called Psycho Cut at level 47.
I think night slash because more Pokemon can learn slash but few can learn night slash if it weren't a TM
there is no night slash in diamond
Sceptile, to my knowledge, is incapable of learning Night Slash.
First, do not evolve your sneasel, second, find a heart scale, third go to the move relearner's house. Give him the heart scale and select your sneasel to relearn night slash
Absol learns the move Night Slash at level 41. Absol also learns the Psychic type version of Night Slash called Psycho Cut at level 47.
Greninja learns Night Slash at level 52. This Dark-type move is useful for its high critical hit ratio and can be a strategic addition to Greninja's move set in battles.
Shadow Ball
Sources say... Night Slash...
I think night slash because more Pokemon can learn slash but few can learn night slash if it weren't a TM
In Pokémon Pearl, Night Slash is a Dark-type move that can be learned by certain Pokémon through leveling up or by using a TM. Specifically, you can teach Night Slash to Pokémon like Sneasel or Honchkrow via leveling up. Additionally, you can find TM87 for Night Slash in the game, which is located in the Victory Road area. Make sure to check the compatibility of the Pokémon you want to teach it to, as not all Pokémon can learn the move.
there is no night slash in diamond
Sceptile, to my knowledge, is incapable of learning Night Slash.
Oshawott's most powerful move (without cheats) is Hydro Pump-- Oshawott learns it at level 43. Hydro Pump is 120 power plus 60 power because Oshawott is a Water type- so that's 180 power.
First, do not evolve your sneasel, second, find a heart scale, third go to the move relearner's house. Give him the heart scale and select your sneasel to relearn night slash
Wing attack X Scissor Steel Wing Night Slash
Heracross will either have it when you catch it or you can travel to Pastoria City and go to the east side of town(the house next to the water) to the move relearner. You will need a heart scale. Talk to the guy in the house and he will allow you to get heracross night slash.