If you have a "Winged Kuriboh" monster in your Graveyard: Pay half your Life Points; add 1 "Polymerization" Spell Card or "Fusion" Spell Card from your Deck to your hand, except "Diffusion Wave-Motion". If this card is in your Graveyard: You can banish 3 copies of "Sabatiel - The Philosopher's Stone" from your Graveyard, then target 1 monster on the field; it gains ATK equal to the ATK of the monster on the field with the highest ATK (your choice, if tied), until the end of this turn.
Cards like Fusion Sage and King of the Swamp are only able to search out Polymerization and not other Fusion Spells. But are usually prefered over Sabatiel - The Philisopher's Stone because because they are easier to activate and without needing to pay half your LP.
Yeah, outside of uses with Cyber Style I can’t see much use for this, but with it this card is a 1 card Cyber Twin Dragon which is really nice. You can even throw it into decks not based on Cyber Dragons as long as you have a consistent way to mill Winged Kuriboh like Neos Fusion.