If two or more replacement effects would apply to a card-drawing event, the player who’s drawing the card chooses what order to apply them. It’s possible that after applying one of them, the others will no longer be applicable because the player would no longer draw a card. For example, if you have more than one Sages of the Anima on the battlefield and you would draw a card, each Sages of the Anima’s replacement effect could apply. Once you use one, the rest are no longer applicable.