We know Oda tends to foreshadow events and characters in One Piece. One way he does it is by the cover page drawings. We have seen Ace death being foreshadowed in a cover page drawing around 50 chapters before he died.
In this picture you can see Luffy mimicking the exact face he had when Ace died in his hand, at the top of the deck is the Ace of Spade card and right on the other hand is death, represented by Brook.