The Omen Archive

Item	Known Details
Divination Necklace	“If you are being divined on, if someone's using a spell on you, it will let you know that that is happening.... you can load a little illusion in here to fool certain kinds of divination magic. [01:30:16]”
Metamagic Gems	[More details for specific kinds in following] “They're worth a lot.... The gems can be crushed as a material component of a spell and have their energy consumed into the spell. [01:33:15]”
Voker’s Gems	“...grants advantage on an evocation spell that has a single target. [01:34:33]”
Viner’s Gems	“...can be used in casting a divination spell, and if done so, you gain advantage on your next initiative roll before a long rest [01:35:03]”
Juror’s Gems	“...gives you the advantage on the next saving throw before a long rest. If you do it as part of an abjuration spell. [01:35:59]”
Muter’s Gems	“...if you use it as part of a transmutation spell that targets a single creature. If that creature either fails its saving throw or willingly allows itself to be affected by the spell, it gains one of the following until the end of your next turn, which is a climb or swim speed equal to its walking speed, a fly speed equal to half its walking speed, or its speed is reduced by half. [01:36:09]”
Mancer’s Gems	Effects not described.