Talk:Ur-Dragon/@comment-18781169-20130923031211/@comment-4613046-20130925132811

I think Calli pretty much answered your question.

The Online Ur-Dragon's health is based on the game's server. Each player engaging the Online Ur-Dragon receives a "copy" of the Ur-Dragon. After doing battle with it (the battle only lasts fo 10 minutes, afterwards he GTFOs), whatever damage you've dealt is then uploaded to the game's server. The "new" health is then redistributed to other players when they engage the Ur-Dragon. More can be found regarding the Ur-Dragon's health under the Speculation &amp; Rumors section of this page.

"How long does it usually take to kill online Ur dragon?"
 * To answer your question, I think the comment below you said it took them 3 hours but we have no idea what health it was at before they had started. Like Calli said, most generations take 2 to 3 days now cept during the nerf period.