Name: The Mortarboard Weapon type: Heavy Grenade Launcher “Time to graduate, cadet.” Intrinsic Perk — Throw It High: This weapon cannot be fired while you are moving. Projectiles shot into the air lock onto the nearest target and propel downward with high velocity. Legendary Trait — Mourner’s Cap: Rapid kills with this weapon grants a temporary overshield. Exotic Catalyst — Tassels Attached: Kills with this weapon spawn cluster bombs.