"Elemental HERO Neos" + "Neo-Spacian Flare Scarab"Must first be Special Summoned (from your Extra Deck) by shuffling the above cards you control into the Deck. (You do not use "Polymerization".) This card gains 400 ATK for each Spell/Trap Card on the field. During the End Phase: Shuffle this card into the Extra Deck.
I kind of disagree. I use Flare Neos in my deck and I really like to use him in duels, because he gains 400 atk for every spell and Trap on the field and if there are 6 Spell/Trap Cards & 2 Field spells, his atk points can be boosted all the way up to 5700 atk, plus you could boost it even higher by using any spells and/or traps with atk boosting effects, like Blustering Winds or Rising Energy.