Zii be very Ixchi to get fighting in Teleria but you will need to be patient. Zii can only be earned by completing Secret Rooms in Normal Difficulty Doom Tower but you will need to claim all 6 of the previous champions (Approx. 200 Secret Rooms which is around 16-17 months).
Zii looks to be a great candidate for Reflex Artifact Set. Her kit focuses around her A2 with the idea being you continuously kill enemies to keep Zii alive. Reflex would allow you to keep this on a low Cooldown combined with the Passive that reduces the A2 cooldown every time you kill an enemy. In addition, the A1 has a small chance to extra hit.
The big issue with Zii is that her damage output is not good enough considering she brings nothing else to a team. Her A2 is only an Average damaging attack and you cannot improve on the 15% chance to extra hit with the A1 making this unreliable. Potentially a candidate for one of the worst epic champions in the game!
This guide will be updated following a full playtest.