Elvia Marni's Stone (Castle Ruins)

- Description: Elvia-obsessed Mad Scientist Marni's Stone. You can collect samples from monsters you killed. Once the stone is filled, you can exchange it through NPC Wacky Toshi. Target: Elvia Castle Ruins enemy x1,500 - Exchange List Heart of the Arid Forest x1 Shard of the Furious Night x1 Valtarra's Flame x1 ※ Can be used from Lv. 61. ※ Samples can only be collected if you make the last hit.

- Additional use requirements are not yet decoded; this is not a complete eligibility check.