User blog comment:ImperiexSeed/Supernatural Mysteries/@comment-3481504-20120404154634/@comment-1509826-20120408180737

Even before becoming King of Hell, Crowly was more powerful than an average crossroads demon, so its likely he could do more than an average one. As for average ones, its unclear after all, they've shown they can do things such as heal the living, revive the dead, grant talent, fame, love ect.

But weather or not they could warp reality like that I'm sceptic, because if they did, I would bet they would feature an episode where someone did something like that, then again its possible they could.

As for Azazel and Lilith who could also make deals, I'm betting they could, considering there the highest form of demon there is.