Unaffected

Unaffected is the term used in certain cards that are inmune and cannot be designated as targets by the effect described in his effect description. But there are more common cards that are unaffected bye 1 type of card (Spell Card or Trap Card. A food example of a card that is unaffected by Trap Card is "Elemental Hero Wildheart" another example of cards that cannot be targeted by Spell Card is: "Horus the Black Flame Dragon LV6", "Silent Magician LV8". Some cards include the designation of both effects (Spell Card-Trap Card) such as: "Odin, Father of the Aesir", "Ultimate Axon Kicker", etc. These cards provide you a great Field Advantage, use it with much cunning and you'll have a big advantage in the Field.