Tireless Tribe is a creature-aggro deck with essentially no artifacts or enchantments to interact with, so this matchup is about surviving their early creatures and stabilizing behind Phyrexian Dreadnought. Essence Flare is a solid way to neutralize their best attacker over a couple of turns, shrinking something like Arrogant Wurm or a Call of the Herd token until it stops being profitable to attack with. Trim Peek and both Impulse for these more proactive answers, since card selection matters less than surviving their curve. Keep the full core engine — Stifle is especially valuable here to strip value from Weathered Wayfarer or Survival of the Fittest activations, denying them key tutors.