As we know, "holy" Oda tends to foretell events in One Piece. One of the information provided in the future is sent by Oda in the...

As we know, "holy" Oda tends to foretell events in One Piece. One of the information provided in the future is sent by Oda in the cover pages. And after looking back on Ace's death, it seems like his "death sentence" has been hung from 50 chapters before the end.

The chapter 520 color cover of One Piece - The place of the foreshadowing of Ace's death
Ace's death is still a deep obsession with One Piece fans. Somehow, fans still have a strong belief that Ace is alive. But all is an invisible dream. Ace is really dead, but Ace's will will be done by his brothers.
Ace's death may have been foretold by Oda from the cover image in chapter 520. Let's analyze the top cover image to prove the hypothesis.
In the cover photo of chapter 520, we realize that Luffy is playing cards with his teammates. Through this guy's expression, Luffy is probably eating onions from his comrades. The most unreasonable and noticeable point is that Luffy's left hand holds the card with the picture "Brook" - Something that represents death. There is a fact that everyone knows that in the deck cards 52 cards don't have Brook cards. So maybe this is the first signal. (If you give an explanation that Oda wants to have the appearance of all the members, please pay close attention, in fact Brook appeared with the scene of the Chasing Cow in the distance). Next, notice Luffy's right hand, this guy holds a lot of Ace of Spades cards (or we call Aces). This is a card representing the Fire Rights Ace. More specifically, Luffy's expression expressed almost the same as when he showed despair when Ace died.

In addition, during a Ace of Spaces game is considered a "black spot", or "death card" this is quite relevant when you realize that Ace is the captain of the Spade Pirates.
So far, more than 900 chapters of One Piece have gone through but it is still extremely attractive by the content of the extremely attractive and Logic. So far, Oda has not yet confirmed what we just said above. But perhaps this is not a coincidence that all are arranged in advance. It's just that we realized it earlier or not.
Mr. Ruso