England international Harten just failed to record a perfect match with 41 from 42 attempts.
New shooting recruit Mwai Kumwenda, a Malawi international, has become the first player from the East African-country to play in the ANZ Championship and she didn't disappoint for the Tactix early on.
Showing athletic ability in the air, Kumwenda and Julianna Naoupu proved a good combination.
However, Magic upped the tempo with four goals in a row, pushing into the lead.
At the other end of the court, Silver Ferns defensive duo of captain Casey Kopua and Leana de Bruin put the squeeze on the Tactix shooters.
A powerful finish to the quarter gave the Magic a handy 19-12 lead at the first break.
Magic exploded into a position of control during a dominant second quarter.
The relentless Magic continued into the third stanza with teenager Jamie-Lee Price taking over at wing defence, from Bessie Manu.
The hosts lost a lot of their early spark, with turnovers climbing. Magic dined out on the extra possession and their dominance grew to a 55-33 advantage at the last break. Magic came home strongly, winning the match 70-46.