Cut Down and Grim Bauble both cheaply kill their early mana creature Arbor Elf, disrupting the ramp that fuels Mwonvuli Acid-Moss and Thermokarst land destruction before they can strand you on lands. Since Ponza wants a long grindy game while denying your mana, prioritize deploying threats quickly rather than trading resources, so Reckoner's Bargain and one Giant's Boulder come out for being too slow. Protect your artifact-land manabase, since Ponza's removal targets any land via Mwonvuli Acid-Moss and Thermokarst, including nonbasic artifact lands. Race to close the game before they land Writhing Chrysalis or Annoyed Altisaur value creatures.