Zachary Zatara
Zachary Zatara is a fictional character in the DC Universe. Zachary is a descendant of the Homo Magi just like his cousin Zatanna and uncle John Zatara. He first appeared in "Teen Titans (vol. 3)" # 34, and was created by Geoff Johns and Tony Daniel.
Warlock of YS
Once there, Green Lantern found himself unable to will his ring to function and was unable to stop the power ring from flying off his finger. Zatanna realized she would have to speak her sentences backwards, rather than her words for her magic to work in Ys. The ring returned to Green Lantern's finger thanks to her magic. The Warlock sent his army of time lost Earth warriors against the pair of heroes, only to have Zatanna stall them by ordering them to fight each other. Next, the Warlock sent demons, incubi, djinns, imps, fiends and familiars, all spirit beings from the myriad worlds beyond Earth. These magical creatures were able to break Zatanna's spell over the human warriors. Fortunately for the heroes, Green Lantern was able to use his power ring by moving from his right hand to his left.