Arceus has never been distributed as an egg. If you are referring to the egg from the HeartGold/SoulSilver Arceus event, it hatches automatically.
You can only get Arceus from Pokemon D/P/Pt.
Yes, in the Shinto Temple he gives you either a Dialga, Palkia, or Giratina egg.
It is an egg, that when hatched, the most powerful Pokemon ever comes out. Arceus. I'm not sure how you got the Arceus Egg because Arceus is a legendary Pokemon.
Through cheats
its when you get a dialga palkia or giratina egg
i am sorry but you cannot obtain arceus in Pokemon heartgold or soulsilver.
Yes you can get Arceus if you have a Pokemon platinum,diamond,or pearl and you have giratina dialga and palkia trade them to your Soulsilver and then a mountain will appear somewhere and then Arceus will be in there
Only with hacks
You cannot catch Arceus in Pokemon Soulsilver nor Heartgold, You must either transfer a Arceus from D/P/Ptt or Receive one through the Arceus Event.
Nope arceus is one of those unobtainable Pokemon along with Shaymin, Darkari,Manaphy
Depends......Is it a "ALL STATS 999!" If so then, yes it will Bad Egg your game.