This card was printed in the following sets:

Card Name: Symbol Set Block
Tezzeret, Agent of Bolas Mirrodin Besieged (Mythic Rare) Mirrodin Besieged Scars of Mirrodin
Tezzeret, Agent of Bolas Guilds of Ravnica Mythic Edition (Mythic Rare) Guilds of Ravnica Mythic Edition Miscellaneous

This card has restrictions in the following formats:

Format Legality
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!