Temur Lessons plays a grindy lesson-matters shell with Tablet of Discovery, Accumulate Wisdom, and Thor, God of Thunder as their finisher, so cheap efficient removal and graveyard disruption both have value. Erode is a strong one-mana answer to Thor, God of Thunder or Questing Druid (though it lets the opponent search for a basic land), and Soul-Guide Lantern can exile key cards from their graveyard to blunt Combustion Technique's damage and limit Thor's recursion. Seam Rip misses higher-cost threats like Thor, God of Thunder (which has mana value 5), so it's trimmed for more reliable removal. Keep the rest of your core plan intact and focus on curving out efficiently before they can stabilize with their card advantage engine.