Planeswalkers are typically countered by combo decks and aggro decks and so just by supporting those kinds of archetype you will neuter walkers somewhat and not need to forgo them
Since Masters 25 boxes are smaller than normal (with only 24 packs rather than the more common 36), all of the bulk commons and uncommons don't actually add all that much value to the EVabout $1.60
Blue also has access to reactive removal in the form of counterspells, though Ill be covering those in a later article
However, there are better options available in the format, such as Ghalta, Primal Hunger, which offers a more impactful and immediate threat
You can also go hard on Treasure generation with enablers like XornXorn or Mondrak, Glory DominusMondrak, Glory Dominus and payoffs like the Modern Horizons 3 card Marionette ApprenticeMarionette Apprentice or Fallout franchise villain Kellogg, Dangerous MindKellogg, Dangerous Mind