What makes twinking a caster "great"

[Vexenu]

A Wizard with a bunch of +Mana gear can start quad kiting at level 8. A well-geared Necro twink can get surprisingly far with face tanking and lifetapping. Enchanters don't benefit much from heavy twinking except better survivability and more reliable charms, and Mages gain almost nothing from twinking beyond the focus items and some very basic INT/mana/STR gear.