Super Polymerization Secret Rare - Ra Yellow Mega Pack Unlimited

Discard 1 card; send, from either side of the field to the Graveyard, Fusion Material Monsters that are listed on a Fusion Monster Card, then Special Summon that monster from your Extra Deck. (This Special Summon is treated as a Fusion Summon.) Spells, Traps, and card effects cannot be activated in response to this card's activation.