by tumorous
(The same timing question would apply to healed Wounds before Golden Grail is played, or Spells cast before the Rings are played... but you're more likely to play those cards first compared to Sword.Crystal Mastery uses a slightly more clear templating, because it reads "At the end of the turn, any crystals you have spent this turn are returned to your Inventory." If Sword read something like "At the end of combat this turn, Fame +1 for each enemy defeated," it would unambiguously point to enemies defeated after and before Sword was played.)