"I presume if it were something as obvious quicklime-metal you would have already deduced the fact.  If we go rarer and higher and slightly less reactive and restrict ourselves to legal outputs, then I believe that could match 63, glowember?  Or perhaps 70, farglint?  I think one of those was the most reactive from that long stretch of silvery, easily bent metals from 57 to 71, but I don't recall which."

"I presume if it were something as obvious as quicklime-metal you would have already deduced the fact.  If we go rarer and higher and slightly less reactive and restrict ourselves to legal outputs, then I believe that could match 63, glowember?  Or perhaps 70, farglint?  I think one of those was the most reactive from that long stretch of silvery, easily bent metals from 57 to 71, but I don't recall which."