Nuker

This term refers to a casters specializing in dealing heavy damage to large numbers of enemies with a Nuke spell. Elementalists have access to a large and diverse array of such skills, so is usually favored to fullfill this role in a party. When asking for a Nuker, players almost always mean Elementalists more specifically pyromancers (like the E/Me_Heavy_Nuker), who inflict AoE and massive damage spells. However, some Necromancer builds match the damage dealing potential of Elementalists, and are sometimes called Nukers (see especially N/Me SS Nuker).