Angurvadal, the Stream of Anguish

This longsword has 5 runes inscribed along its blade that glow and burn fiercely in times of war but with a dim, calming light in times of peace. You gain a +2 to attack and damage rolls with this weapon. While Angurvadal is drawn, its runes glow with 5 feet of dim light when not in combat. As long as the weapon is drawn and you are conscious, you cannot be surprised and have advantage on initiative rolls as the runes blaze to life. On your first turn, and for the duration of the combat, the runes emits bright light in a 20-foot radius and dim light for an additional 20 feet. During this time, attacks with this sword also deal an additional 2d6 fire damage.

Angurvadal has 5 charges and regains 1d4 + 1 charges each dawn. As an action, you can expend 1 or more charges to cast _burning hands (save DC 15). For each charge spent after the first, you increase the level of the spell by 1\. When all charges are expended, roll a d20\. On a 1, the fire of the runes dims and Angurvadal can no longer gain charges. Otherwise, Angurvadal acts as a mundane longsword until it regains charges. Each charge is represented on the blade by a glowing rune that is extinguished when it is used.

Lore

Little is known of Angurvadal beyond the glow of its iconic runes and its often vengeful bearers, including the hero Frithiof. Despite its rather imposing title, this sword has far less of a history of tragedy associated with it than the other swords presented here.