Legendary Knight Critias

Cannot be Normal Summoned/Set. Must be Special Summoned with "Legend of Heart", and cannot be Special Summoned by other ways. When this card is Special Summoned: You can target 1 face-up Spell/Trap Card on the field; banish that target. When this card is targeted for an attack: You can target 1 Trap Card in your Graveyard; Set that target. That Set card can be activated during this turn.