Since you want as many creatures as possible sneaking in combat damage youre also running Slayers' Stronghold, Skarrg, the Rage Pits, and Kessig Wolf Run to grant some cards trample
Not only do you get a handful of new onces (which can support a bunch of different color combinations thanks to the partner mechanic), but some of the decks contain some really powerful reprint commanders as well
While your permanents dont get phased out, which is definitely a better form of protection, you can use Earthshape to give all of your creatures indestructible and hexproof until end of turn
Core mechanics for blues include card draw and card selection to keep options open
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Blue: Knowledge and Manipulation