This card was printed in the following sets:

Card Name: Symbol Set Block
Hardened Scales Khans of Tarkir (Rare) Khans of Tarkir Khans of Tarkir
Hardened Scales Commander 2016 (Rare) Commander 2016 General
Hardened Scales Commander Anthology 2018 (Rare) Commander Anthology 2018 Miscellaneous
Hardened Scales Jumpstart: Historic Horizons (Rare) Jumpstart: Historic Horizons

This card has restrictions in the following formats:

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