Sets: Grove Warden behavior

This item is part of the Grove Warden set -- a matched set of 3 pieces made by a carpenter: the boots "Rootstride", the wisp "Heart of the Grove" and the lantern "Firefly Watch". Collect and wear all 3 together to assemble the set; once complete it grants its bonus, and now and then the lantern's light calls roots up out of the ground to bind your foe, so that it loses its next round. Wear only some pieces and you gain nothing extra.