Originally, Horndrill was a TM07 in Generation One, the games Red, Blue, and Yellow. The TM07 has changed with Generations, because in Generation Two, it became Zap Cannon, then in the Third and Fourth, became Hail instead.
So no Horndrill TM in Pokemon Diamond, I'm afraid. But you can get Pokemon migrated from the GameBoy Pokemon Cartdriges that learn the move Horndrill. Some of them are Nidoran, Rhyhorn and Rhydon, and Seaking and Goldeen.
Have fun!
at lv 26
This TM doesn't exist in leafgreen.
It effects every Pokemon except for Ghost type Pokemons.
Pokemon diamond
Pokemon diamond Pokemon diamond Pokemon diamond
Neither.
you cant be a Pokemon in Pokemon diamond
She is not in Pokemon diamond.
There is no Pokemon temple! There is such thing as Pokemon diamond.
Pokemon 134 is Finneon in diamond
Chingling is the 47th Pokemon in Pokemon Diamond.
where are special key in Pokemon diamond where are special key in Pokemon diamond