Originally Posted by
Trassk
Actually.. yes, thats very much it. Any argment against the orcs coming to azeroth is made null and void by pure matter of fact an orc, who if not being on azeroth, would not have been sent back in time, so would not have given the enchanted axe, and who would not have thrown himself into the well of eternity to keep the legion at bay long enough for the rest to close the portal.
There wasn't anyone else who did something that crazy, so yes, as a paradox, the orcs had to come to azeroth, otherwise there would be no azeroth.