Discard 1 card, then target 1 face-up monster you control that has a Level; send it to the Graveyard, also, after that, if it left the field by this effect, Special Summon from your Extra Deck, 1 Masked HERO monster with the same Attribute, but a higher Level than, the Attribute Level the monster had when it was on the field (its original Attribute Level, if face-down. This Special Summon is treated as a Special Summon with Mask Change ). You can only activate 1 Mask Change II per turn.