While most "Ghostrick" monsters may remain face-down, "Ghostrick Alucard" and "Ghostrick Dullahan" will often remain face-up on the field, leaving you with another "Ghostrick" to use this effect with.
Use this card in combination with "Ghostrick Alucard", destroying the monsters this card flips face-down.
Use "Ghostrick Lantern" to protect this card from an attack, once it have to be exposed in order to activate its effect.
Use "Ghostrick Ghoul" to give this card a huge amount of ATK until your opponent's End Phase so, even if they Summon a monster that would surpass this card's effect, that monster will have to deal with its increased ATK.
Combine this card with "Ghostrick Night", so the monsters your opponent Summoned and were flipped face-down will remain face-down as long as you control a "Ghostrick" monster.