One key part of Urzas Saga is other artifacts to let you unlock the parts where it two-shots your opponent and bowls over all their creatures when you have more artifacts
Get there early, bring backup for multiple purchases, and list sealed packs same day if youre flipping
Enter the next five cards
Last, but not least, another personal favourite that got me through the very beginning of my time with Pokemon TCG Pocket is Diglett and Dugtrio
This also turns off every other opposing activated ability, invalidating combo enablers like Hermit Druid and ability-reliant Commanders like Ragost, Deft Gastronaut
This especially limits your ability to interact with people that interact with your combos, though Naya creatures combo off with enough variants you could likely get away with having more combos than your opponent's interaction if youre lucky