Build Breaking Point 100% crit only if you only need Defence against one surce of damage (weapon power/cristal power, breaking Point + double crit if you need Defence against weapon and cristal power.

Pushing or freezing Lane?

Pushing:
If you are trying to clear the minion wave as quick as possible, so you can rotate more often without loosing as much farm.

Freezing:
If you are only last hitting the minions so that the enemy Carry is easier to Gank, because he's on your side of the Lane.

Pushing is fine because you can get to your turret easy with your A (Sonic zoom).
If your freezing try to keep the enemy minions away from your turret.


When to rotate?

Because rotating with Vox is easy you should always rotate with your A. Rotate when your team is going to the jungle shop and you got a lot of gold too, when the enemy Carry is rotating and the enemies are pushing your team out of the jungle or if you just cleared your wave and you got enough gold to guy an item you need. Use your A to rotate as fast as possible when your teammates need your help.


When to harass the enemy Carry?

Harassing the enemy Carry is good if you can trade damage to your advantage. Knowing if the enemy Carry has a Book of Eulogies is important too, because the you can trade damage to his advantage, what is fine because you can heal yourself. Also try to harass if you have more items than he has.

A good combination is hitting the Carry with a basic-attack, mark him with resonance, use your A and hit him again. With this combination you'll be able to hit him with about 3 attacks (the two auto-attacks from your A are dealing 50% damage each, 60% when the A is overdriven).

Usually try to keep a bit of distance to Junglers, because the Junglers job is to kill the emery Carry. Heroes which can stick on Vox are really strong against him: Koshka, Blackfeather, Taka, Idris, Glave and Ozo can cost you a lot of trouble, but when played right then it isn't to hard to handle. Try to be at your farthest range against melee Junglers, so that you can attack him but he can't attack you. Also, often it isn't a good idea to 1vs1 the enemy Carry if you aren't ahead in gold or when he has more burst damage (Ringo, Gwen). Also stacking your Breaking Point on the enemy Captain is really good, then attack the the Jungler/Carry but keep in mind stacks don't make you unbearable. Also, always try to get out of a position where both enemy Carry and Jungler can attack you.