Flame Tongue Longsword

You can use a bonus action to speak this magic
sword's command word, causing flames to
erupt from the blade. These flames shed bright
light in a 40-foot radius and dim light for an
additional 40 feet. While the sword is ablaze, it
deals an extra 2d6 fire damage to any target it
hits. The flames last until you use a bonus action
to speak the command word again or until you
drop or sheathe the sword. (requires attunement)