Hidden Passage

Card type	Monster
Attribute	SPELL"SPELL" is not in the list (DARK, DIVINE, EARTH, FIRE, LIGHT, WATER, WIND, ?, ???, THUNDER, ...) of allowed values for the "Attribute" property.
If all your monster's ATK are lower than the opponents lowest ATK monster, 1 monster you control can attack your opponents directly.

In other media

Page	Medium	Debut date
Hidden Passage (anime)	Anime	2010-06-16
Hidden Passage (Duel Links)	Yu-Gi-Oh! Duel Links	2020-04-30