You can of course use all three choices to draw three cards, or you can use it to counter an opponents spell and draw two cards, or pick one of each
Edicts aside, lets take a look at the very best the Mardu color combination can give us
It should keep back a lot of attackers in order to keep other plsyers stuff from blowing up
If you do, you may play the exiled card without paying its mana cost
Alternatively, you can try to maximize the zombie-making effect of the card beforehand by playing cards like Dusk-Legion Zealot, Burglar Rat, Thought Erasure, and Disinformation Campaign (perhaps followed up by a sweeper like Golden Demise) to set up an enormous hand advantage that Awaken converts into a board advantage
The card slinger fits both sleeved and un-sleeved cards, and accommodates standard sized MTG, Pokemon cards and more