Discard 1 card, then target 1 face-up monster you control that has a Level; send it to the Graveyard, then Special Summon 1 'Masked HERO' monster from your Extra Deck with the same Attribute as that monster, but with a higher Level. (This Special Summon is treated as a Special Summon with 'Mask Change'.) You can only activate 1 'Mask Change Second' per turn.
Atom 1.0
