if you mean like a pokemon move uses other pokemon to attack regigigas can learn beat up. which uses the team to attack so if you had 3 pokemon with you it would be three attacks i am not sure what you mean hope i helped
no, but use can use poketransfer from heartgold to white
You use it
No.
you use waterfall at the Pokemon waterfall or the battlefield.
Use a fishing rod.
You can use a Pokemon repel and then use a poke radar.
probaby kyogre
Staryu.
There is no best Pokemon on Pokemon HeartGold.
there is no Pokemon Mansion in Heartgold.
yes. You can use the action replay in any Pokemon game.
Usually, a Poke`Mart. But it depends on the code.