I think Sasuke had hawk and snake summonings since his training days with Orochimaru.
It makes sense because since shippuden Kishi never showed Sauce training much. Sasuke lost his white snake powers against Itachi but still managed to summon snakes in the war arc.
Against Danzo Tobi had no idea Sasuke had hawk summonings despite having a white zetsu follow him around, which means he learned it during the time skip with Oro.
It makes sense because since shippuden Kishi never showed Sauce training much. Sasuke lost his white snake powers against Itachi but still managed to summon snakes in the war arc.
Against Danzo Tobi had no idea Sasuke had hawk summonings despite having a white zetsu follow him around, which means he learned it during the time skip with Oro.