well it is bothering me since 434,shanks said he bet his hand to the new era
but shanks provoking a D to shine in the future is be a coincidence?
also why dragon speaks only for luffy and not ace?
and shanks why provoking luffy and not ace?
why betting so much in a little kid from east blue?
i think shanks was aware that luffy was garp's grandson and a D and for some reason he knew he had to provoke particullary luffy and make him great for the sake of the new world
and that reason maybe has something to do with roger