Song of Lamae is a craftable set available in all armor types. When you take damage while under 30% Health, you deal 3870 Magic Damage to the attacker and heal for 3870 Health. This effect can occur once every 30 seconds.
Song of Lamae is part of the base game. The crafting stations are located in Malabal Tor (Sleepy Senche Overlook), Alik'r Desert (Rkulftzel) and Eastmarch (Tinkerer Tobin's Workshop). You can craft any armor, weapon or jewelry of this set in any motif style you know, as long as you have 5 traits researched (per item). You can trade crafted pieces to other players. Each set item becomes bound on equip.