"We're not sure what one looks like, so to be safe, nobody look at anything until we're out of here."
—Parbold Drix, veteran explorer

Tenth Edition

Sylvan Basilisk

Whenever Sylvan Basilisk becomes blocked by a creature, destroy that creature.

Starter 1999

When Sylvan Basilisk becomes blocked, destroy all creatures blocking it. (Destroy the creatures before they deal damage. Sylvan Basilisk still doesn't deal damage to defending player.)

Portal Second Age

If Sylvan Basilisk attacks and is blocked, destroy all creatures blocking it. (Destroy the creatures before they deal damage. The Basilisk doesn't damage your opponent.)