Noble Knight Drystan

While you control another "Noble Knight" monster, your opponent cannot target your monsters with less than 1800 ATK, except this card, with card effects, and their monsters cannot target them with attacks. If a "Noble Arms" Equip Spell becomes equipped to this card: Target 1 face-up card on the field; destroy that target. You can only use this effect of "Noble Knight Drystan" once per turn.