The first 1/3 or so of my rankings are the best reprints, and after that Im mostly weighing the playability of each card
Many games went Man-o'-War your turn 3 creature, Man-o'-War your same creature on turn 4, Undo your same creature and one of my Man-o'-Wars on turn 5, Man-o'-War the creature yet again on turn 6
Having so much blue in this deck makes it easy to also draw cards with other effects, but since Ojutai will always be around to Anticipate, the deck's blue cards may focus on other effects as well to limit the redundancy
MTG Sick Deals and the High End group are generally my go-to Facebook groups for buying MTG singles and booster boxes, but there are also groups specifically dedicated to sealed product sales as well, so dont be afraid to shop around
As for competitive play, its a 5 mana 3/3, and Morphling he is not