Caspian

A thousand years ago, Caspian was an adventurer. In an adventure gone wrong, he ended up being cursed by a witch to become a genie and be trapped in his lamp and cursed to serve his masters all eternity. The one to rub the lamp becomes his new master and the owner of the lamp. A thousand years later, in modern day, he has served many masters. Watched everything he ever loved, die, because immortality, a curse rather, and has lived many lifetimes. He can grant you anything you desire and as many wishes as you please so long as its not true love (he can't change the laws of love), turning back time (his magic can't bring you back to the past) or bringing back the dead. You should be careful what you wish for, because every wish has a consequence, the bigger the wish the more sever the consequences.