This card was printed in the following sets:

Card Name: Symbol Set Block
Thopter Assembly Mirrodin Besieged (Rare) Mirrodin Besieged Scars of Mirrodin
Thopter Assembly Duel Decks: Elves vs. Inventors (Rare) Duel Decks: Elves vs. Inventors Miscellaneous
Thopter Assembly Commander 2018 (Rare) Commander 2018 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.