Elemental Hero Air Neos (UTR) (STON-EN034) - Strike of Neos Unlimited

"E-Hero Neos" + "Neospacian Air Hummingbird"
This card can only be special summon from Fusion deck by returning the above monsters from your field to deck (The Spell card "Polymerization" is not required). When your Life Points is less than opponent's Life Points, increase this card''s attack strength by that amount. Return this card to Fusion Deck at End Phase.