Rancor is the best talent for lv 1 because it give a good attack speed.

I think vampire assault is a good sustain talent, it can make you stay alive for a good time in the lane
Manticore is pretty good for boost damage againts heroes and structures.

It is a real good talent for boost damage and the mana cost is very low.

That is situacional talent choose what you think is best for build XD.

That is the best for both builds because it boost you damage against the other heroes gaving more sustain for trade damage and more damage for kill the tanks.

I think tumble is good for the sustain build because it give you another escape, blood for blood is useless in this build, but is really necessary on damage build or you will turn into a real squishy heroe.

Nexus frenzy is good because it gave you more attack speed and more range , bolt of storm in the sustain build is useless because you just have 2 escapes.
If you choose the strafe vengeance is a good talent too.
Bolt of the storm is so necessary on the damege build because you need a second escape.
Storm of Vengeance is not so good because the enemies will run of the area who have the ult.

Thanks for see the guide , give me you feedback and enjoy you game!!(enjoy the music too) Play Video