On Wings of Gold does exactly thatit pumps your whole board, making your creatures hit harder
It serves as an infinite mana outlet, acting as the payoff for other combos
Im not a big fan of putting all my eggs in one basket, so I enjoy decks that encourage you to use Equipment while also building up a board presence
If the card has any mandatory additional costs (such as that of Bone Splinters), you must pay those to cast the card
For the time being, if you activate it by chaining it to his Spell Trap, such as an attack, you can choose the card that is being activated as the absorption destination, so it seems that you will actually increase your hand, but when asked if you want to do it after getting Rank 9, he tilts his head