Survival Elves is a mirror-ish matchup that is mostly a race with very little interaction besides creature combat, so Xantid Swarm's flying evasion and its attack trigger stopping them from casting spells that turn can buy a crucial window to combo off safely. Duress is weak here since their deck is almost entirely creatures and lands, with only a handful of noncreature spells (Natural Order, Survival of the Fittest) to take, so we trim one copy along with an Elvish Spirit Guide for two Xantid Swarms. Because speed is king in this matchup, prioritize assembling Hermit Druid into Volrath's Shapeshifter as early as possible.