Introducing the “Ghostrick” Monsters!
“Ghostrick” monsters, all being masters at hiding, have these two effects!
・You can only Normal Summon these guys if another “Ghostrick” monster is already face-up on the field.
・Once per turn, you can change these cards to face-down Defense Position.
By combining them with cards that have face-down Defense Position related effects, you can dodge attacks while fighting with direct attacks!

What kind of cards will you use in your “Ghostrick” Deck?

Source:
https://www.yugioh-card.com/japan/topics/?201311212