Tunic, Thorns:

Each time the wearer of this item is struck in combat, your foe will take 1 point of damage.
Roll on the following chart to see the thorn damage of this items:

%Roll: Thorn damage:  Value:
01-90:   1-D4                     400 Gold.
91-94:   1-D4 +1                500 Gold.
95-97:   1-D6                     600 Gold.
98-99:   1-D6 +1                700 Gold.
   00:     1-D8                     800
Gold.

Note:
This item does NOT stack with other items of a thorn nature. If two such items are worn at the same time, the higher damaging will be in effect. This applies to spells as well.