[?]Sages of the Anima + Brainstorm

[mujadaddy]

Corner case, I know, but... with Sages of the Anima in play, does the replacement effect work with all 3 draws, or are all 3 draws done simultaneously?

Creature - Elf Wizard 3/4 (http://magiccards.info/arb/en/103.html), 3GU (5)
If you would draw a card, instead reveal the top three cards of your library. Put all creature cards revealed this way into your hand and the rest on the bottom of your library in any order.

[cdr]

423.2. Cards may only be drawn one at a time. If a player is instructed to draw multiple cards, that player performs that many individual card draws.

Each draw is a seperate event.