Woodsman's Battleaxe

This magic weapon's handle is carved with leaves
and vines, and the weapon weighs half as much
as a normal battleaxe. When the axe hits a plant,
whether an ordinary plant or a plant creature,
the target takes an extra 1d8 slashing damage.
When a creature of non-good alignment wields
the axe, it sprouts thorns whenever its wielder
makes an attack with it. These thorns prick the
wielder for 1 piercing damage after the attack
is made, and this damage is considered magical.