Nova is a good compliment skill for the melee Sorceress, as it can deal good damage in a short amount of time if you have high Faster Cast Rate and has a slight stagger effect. It's good for close-combat or if you just need a split second to Teleport out of the fray to a better vantage point.
With this attack the Sorceress creates a wave of electrical energy, which radiates from her fingertips, bathing all nearby enemies with its destructive force. This spell is ideal for defeating melee opponents who swarm too closely.
↑Diablo II Manual, page 88. Blizzard Entertainment, 2000.