Sabatiel - The Philosopher's Stone

The effect "①: If a 'Winged Kuriboh' monster is in your GY, you can pay half your LP; add 1 'Polymerization' Spell or 'Fusion' Spell from your Deck to your hand" does not target. (You pay half your LP as a cost when activating the effect.)

When resolving the effect of one "Philosopher's Stone - Sabatiel", you add only 1 card, either a "Polymerization" Spell or a "Fusion" Spell, from your Deck to your hand.

The effect "②: If this card is in your GY: You can banish 3 'Philosopher's Stone - Sabatiel' from your GY, then target 1 monster on the field; it gains ATK equal to the ATK of the monster with the highest ATK on the field until the end of this turn" is an effect that can only be activated during your Main Phase. (This effect creates a Chain Link.)

The effect "it gains ATK equal to the ATK of the monster with the highest ATK on the field" is an effect that targets 1 face-up monster on the field. (When activating this effect, you banish 3 "Philosopher's Stone - Sabatiel" from your GY as the cost.)