This card was printed in the following sets:

Card Name: Symbol Set Block
Azorius Locket Ravnica Allegiance (Common) Ravnica Allegiance
Azorius Locket Commander 2019 (Common) Commander 2019
Azorius Locket Innistrad: Crimson Vow Commander (Common) Innistrad: Crimson Vow Commander

This card has restrictions in the following formats:

Format Legality
Pioneer Legal
Modern Legal
Legacy Legal
Vintage Legal
Commander Legal
Pauper Legal
Historic Legal
Explorer Legal
x For more information regarding each format and play style modifications, visit the Banned / Restricted Lists for DCI-Sanctioned Tournaments page on the Magic: The Gathering website.

Gatherer works better in the Companion app!