This card was printed in the following sets:

Card Name: Symbol Set Block
Triskelion Fourth Edition (Rare) Fourth Edition Core Sets
Triskelion Magic 2011 (Rare) Magic 2011 Core Sets
Triskelion Antiquities (Rare) Antiquities Early Expansions
Triskelion Mirrodin (Rare) Mirrodin Mirrodin Block
Triskelion Duel Decks: Elspeth vs. Tezzeret (Rare) Duel Decks: Elspeth vs. Tezzeret 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!