This card was printed in the following sets:

Card Name: Symbol Set Block
Strionic Resonator Magic 2014 Core Set (Rare) Magic 2014 Core Set Core Sets
Strionic Resonator Masters 25 (Rare) Masters 25 Miscellaneous
Strionic Resonator Commander 2019 (Rare) Commander 2019

This card has restrictions in the following formats:

Format Legality
Pioneer Legal
Modern Legal
Legacy Legal
Vintage Legal
Commander 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!