Dawnrender

This weapon appears as an eight-foot spear shaft of silver. Instead of a regular spearhead, it has an ornate bulb of blueish metal with a luxite emitter crystal. The other end has a large amber gem. It was once the weapon of Halvdan the Bold, one of the founders of the Pilgrim Knights.

You can use a bonus action while wielding the shaft to cause a spearhead of pure light to spring into existence from the luxite emitter. The shape of the head was the inspiration for the Pilgrim Knight's coat of arms. The greatspear's radiant head emits bright light in a 15ft radius and dim light for an additional 15ft. The light is sunlight. You can also use a bonus action to make the radiant head disappear. This weapon is easier to handle than a regular glaive, and does not have the Heavy property.

While the radiant head is active, you gain a +2 bonus to attack and damage rolls made with this magic weapon, and attacks with the weapon deal radiant damage instead of slashing damage. An undead creature hit by the weapon takes an extra 5 (1d10) radiant damage.

In addition, once per long rest you can use an action to cast the Destructive Wave spell (DC 15, only radiant damage) by impaling the greatspear into the ground.