This card was printed in the following sets:

Card Name: Symbol Set Block
Horseshoe Crab Tenth Edition (Common) Tenth Edition Core Sets
Horseshoe Crab Urza's Saga (Common) Urza's Saga Urza's Block
Horseshoe Crab Masters 25 (Common) Masters 25 Miscellaneous

This card has restrictions in the following formats:

Format Legality
Modern Legal
Legacy Legal
Vintage Legal
Commander Legal
Pauper 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!