Mask Change (Quarter Century Secret Rare) (RA04-EN142) - Quarter Century Stampede 1st Edition Condition:Heavily Played either Special Summon 1 Fiend

either Special Summon 1 Fiend monster

add 1 "Genex Controller" from your Deck to your hand

if possible detach 1 Xyz Material from a monster your opponent control and attach it to the Summoned monster as an Xyz Material

return it on the bottom of the Deck

Mask Change (Quarter Century Secret Rare) (RA04-EN142) - Quarter Century Stampede 1st Edition Condition:Heavily Played either Special Summon 1 FiendTypenull Quick Play Spell AttributeSPELL Card TextTarget 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).