Originally, to get the Dera Vandal the player would need to complete a minimum of four regional battles in favor of one side more than the other throughout the Tubemen of Regor event, andNef Anyo must be victorious at the end of the event (if Alad V were victorious, players with four regional battles would earn the Karak Wraith instead).
The Dera Vandal's components and blueprints were available as rewards in the second and the seventh season Sortie missions.
The Dera Vandal can be obtained from Invasion missions.
Equipping Dera Vandal on Mag, Magnetizing a target, and shooting at it will cause all the projectiles you shot after that point to be sucked into the field, even when aiming elsewhere. Slow burst firing will cause the gun to shoot in two directions; the majority being sucked into the field, the remainder towards your current aiming position. This can be fixed by looking away from the field.
Though it states that it is alarming, enemies are not alarmed by firing it, and only alarmed by nearby allies being killed.