This card was printed in the following sets:

Card Name: Symbol Set Block
Thoughtseize Lorwyn (Rare) Lorwyn Lorwyn Block
Thoughtseize Theros (Rare) Theros Theros
Thoughtseize Masterpiece Series: Amonkhet Invocations (Special) Masterpiece Series: Amonkhet Invocations Amonkhet
Thoughtseize Iconic Masters (Rare) Iconic Masters General
Thoughtseize Double Masters (Rare) Double Masters
Thoughtseize Double Masters (Rare) Double Masters

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.