Talk:FGO 2016 Summer Event/Free Quest Part II/@comment-28485878-20160827130739/@comment-76.31.234.190-20160828220938

That's the Gold Skill Gem, right? I want to say either Tesla (Reconstructed City: Destruction) or Shadow Euryale (Ruins: Explosion) drops them, but I couldn't tell you for sure. If they do, it's an uncommon drop.