to get mystery event finish the Pokemon league and go to petalburg city then talk to the boy standing near PC and write "mystery event is exciting"then save restart the game you see a new option called mystery event
Go to any Pokemart. Face the part of the counter that has the paper with three lines on it. Press A. Put words "LINK TOGETHER WITH ALL"
The Mystery Egg is given to you by Professor Elm's student. He is in the Pokemon Center just outside of the Union Cave. Go inside and talk to him to get the egg.
wifi
No legendary can lay an egg except for manaphy which gives an egg to phione and you can not get manaphy or phione in heartgold
By mystery man you mean the one in DPt? (Diamond, Pearl, and Platinum) the one that gives you items for your secret base. if that's the one he isn't in HeartGold or SoulSilver....... sorry :( hope i helped :)
A Togepi.
the mystery egg will be coming out Easter
no
sometimes
Transfer in a pokémon that is holding a Lucky Egg.
Mystery Gift is already unlocked on HG/SS.
the mystery egg is a togepi...it hatches after walking with it for awhile
Well on Pokemon black and white there is a mystery egg event.
You go to the main menu and click on mystery gift. Then you select how you would like to receive the mystery gift.