Scourge Reapers are a grav tank that fills an anti-air role. They use there speed to aggressively close on the enemy so that no dropship or aircraft is safe from there Arc casters.

The down side to there weapon is it has a very short range for an anti-air weapon but is very powerful.

The arc caster fires out an energy beam that automatically latches on to air board target bringing them down in a flash of electricity and fire. The downside is the beam latches on to anything making it impossible to target anything but isolated targets