This card was printed in the following sets:

Card Name: Symbol Set Block
Sylvan Basilisk Tenth Edition (Uncommon) Tenth Edition Core Sets
Sylvan Basilisk Starter 1999 (Rare) Starter 1999 Miscellaneous
Sylvan Basilisk Portal Second Age (Rare) Portal Second Age 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!