Faerie Miscreant's triggered ability checks to see if you control another creature named Faerie Miscreant at the time the new Faerie Miscreant enters the battlefield. If you don't, the ability won't trigger at all. The ability will check again as it tries to resolve. If, at that time, you don't control another creature named Faerie Miscreant, the ability will have no effect.
Random a card of Magic: The Gathering (MTG), but you can also roll the D20 dice, random a Planeswalker, have fun with the random rules and more.