This card was printed in the following sets:

Card Name: Symbol Set Block
Obsidian Fireheart Zendikar (Mythic Rare) Zendikar Zendikar Block
Obsidian Fireheart Archenemy: Nicol Bolas (Mythic Rare) Archenemy: Nicol Bolas 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!