This set was designed mostly before the official release of Magic
Witherbloom, the Balancer Affinity for creatures first showed up on a simple 4/4 with vigilance and that Argivian Phalanx costs two less mana than Witherbloom, the Balancer which is a stronger creature and grants a huge cost reduction and will straight up give you nearly free colorless instants and sorceries like Warping Wail or Skittering Invasion
Which have been the strongest, most impactful cards from Universes Beyond so far
While Witchbane Orb and Orbs of Warding can work, they are way slower than Leyline of Sanctity, which means that by the time you get around to casting them, the damage may already be done
For example, Modern Horizons 2 added strong support pieces like Lonis, Cryptozoologist and Academy Manufactor
Even without adding in any landfall or other mana-based combos, simply playing a fetch land like Evolving Wilds or Terramorphic Expanse will instantly transform Tifa Lockhart into a 4/4 creature with trample