Monsters like "Goldd, Wu-Lord of Dark World" are a good idea to return to your hand to activate this card. This way, you have a chance of resummoning it through its own effect.
Note that it does not say from which side of the field the "Dark World" monster has to be returned. So you can return your "Ceruli, Guru of Dark World" to your hand after summoning it to your opponent's side of the field.
Activate this card, then chain "Fine" or other similar cards to improve your chances of discarding the appropriate monster.