Mask Change – (Legendary Hero Decks) – (LEHD-ENA21) – (Common)

Target 1 “HERO” monster you control; send it to the GY, also, after that, if it left the field by this effect, Special Summon 1 “Masked HERO” monster from your Extra Deck with the same Attribute that the sent monster had when it was on the field (its original Attribute, if face-down).