"Elemental Hero Neos" + "Neo-Spacian Flare Scarab"
This card can only be Special Summoned from your Fusion Deck by returning the above cards from your side of the field to the Deck. (You do not use "Polymerization".) This card gains 400 ATK for each Spell and Trap Card on the field. This card returns to the Fusion Deck during the End Phase.
: Continuous Monster Effects typically come into play as soon as the monster is successfully Summoned, and don't disappear until the monster is removed from the field or flipped face-down.
: Trigger Effects activate whenever a certain condition on the Field, the nature of play, or the progress of the turn, is met.