Legendary Knight Critias (Purple) (DLCS-EN002) [Dragons of Legend: The Complete Series]

Cannot be Normal Summoned/Set. Must be Special Summoned with "Legend of Heart". When this card is Special Summoned: You can target 1 face-up Spell/Trap on the field; banish that target. When this card is targeted for an attack: You can target 1 Trap in your GY; Set that target. It can be activated this turn.