Moss-covered statues littered the area, a macabre monument to the Basilisk's power.

Thicket Basilisk

Whenever Thicket Basilisk blocks or becomes blocked by a non-Wall creature, destroy that creature at end of combat.

30th Anniversary Edition

Moss-covered statues littered the area, a macabre monument to the basilisk's power.

Masters Edition

Moss-covered statues littered the area, a macabre monument to the basilisk's terrible power.

Classic Sixth Edition

Fifth Edition

If Thicket Basilisk blocks or is blocked by any non-Wall creature, destroy that creature at end of combat.

Protection from Green does not stop the Basilisk’s ability because the ability is not targeted.

The ability destroys the creature at the end of the combat, which is after all first strike and normal damage dealing is done. This means that a creature may have to regenerate twice to survive the combat, once from damage and once again at end of combat.