Djinn, a traveling pony that grants wishes, but what is his agenda?

The quiet peace of Ponyville is shattered by the sudden granting of wishes, left and right, pretty soon everypony has what they want... but are they willing to pay the price?

Little do they know, wishes don't come without penalties...

[And yes, there is some clop, but I will warn ahead of time or not even show it, whichever I decide,]