Ghostrick Museum
Yu-Gi-Oh!
Legacy of the Valiant (OCG) - Cartas Sueltas

Monsters you control, except "Ghostrick" monsters, cannot attack. Monsters cannot attack face-down Defense Position monsters, but can attack directly if all monsters their opponent controls are face-down Defense Position. At the end of the Damage Step, change any monster that inflicted battle damage to a player during this battle to face-down Defense Position.