I never got it because i skipped it but my cousin told me he got it from Mr. Pokemon!
you trade it for your red scale to mr. Pokemon
If you take the red gyarados scale to Mr. Pokemon (The guy who gave you the egg at the beginning of the game), he will trade it for the experience share.
There is no best Pokemon on Pokemon HeartGold.
there is no Pokemon Mansion in Heartgold.
no im sorry, im playing heartgold and i accidently traded a Pokemon holding my exp share and i forgot to take it off.
They are not in Pokemon HeartGold
you get one from mr Pokemon if you show him the red scale (red gyrados) and 1 from professor oak
where is the pokemon transfer lab in heartgold
after you have caught the red gyarados go to Mr Pokemon's house on the road to violet city and trade the red scale for an exp share
You give it to another pokemon in your party and i exponentially halves the experience, effectively allowing the pokemon to get some experience even if it didn't participate in a fight.
No, but you can trade Pokemon only in HeartGold to Black
Aura Beam is in Pokemon HeartGold.