The user can grant any wishes of others or oneself. With this ability, the user can manifest the desires of others and themselves into reality and make their wildest dreams come true. Chaos (Aladdin) has proven to grant his own wishes without any consequences.
The Enchanted Island & The Crew (Home Along Da Riles)
Chaos can grant his own wishes without limitations. Making this power at it's full potential a variation of reality warping.
Crossroad demons (Supernatural) can grant the wishes of humans, but said wishes always result in the demon claiming said human's soul.
Shenron (Dragon Ball) can grant the wishes of anyone who gathers the seven Dragon Balls.
Vengeance demons (Buffy the Vampire Slayer) grant vengeance-related wishes of anyone who says them, though said wishes often result in the victim's gruesome death or even the creation of alternate realities.
Kyubey (Puella Magi Madoka) has the ability to grant wishes (which usually backfire) in form of contracts which causes the victim to become a Mahou Shojo.