Mardu Aggro vs Lands

Prismatic Ending is the key upgrade here, exiling Dark Depths before it generates a Marit Lage token, or hitting Urza's Saga, The Tabernacle at Pendrell Vale, or Thespian's Stage at the right moment. Disruptor Flute can be named on Dark Depths to tax further value, or named on Life from the Loam to slow their recursion engine, buying time for our aggressive clock. Cabal Therapy is weak since Lands has almost no relevant nonland cards in hand to strip and plays a land-based engine instead. Goblin Bombardment is a lower priority than maximizing proactive pressure and answers against their engine pieces, since this matchup is a pure race against their inevitability.