Happy Halloween L2Vanir, it's time for the Trick or Transmutation event! Players must find keys to unlock the mysterious alchemists chests which contain materials needed to craft the 6 different philosopher stones. The philosopher stones are used to summon rare and valuable rewards including s80 weapons, s80 armor, soul crystals up to stage 15, vitality items, noble stones, mounts, giants codex's, element stones and crystals, and head accessories.