Ghostrick Museum (MP14-EN228) - 2014 Mega-Tins Mega Pack 1st Edition

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.