this is definitely not the best way to play but hey, dont know till you try (possibly the shortest guide ever)

i generally buy two bracers (health)
treads (health or attack speed)
aghaims (ulti)
heart (no info needed)
sange and yasha (speed and orb. i personally think this is the best orb on him as of his ulti he dosnt need life steal and this is ok)

max aphotic shield and death coil first. (borrowed time as soon as possible too)

my strategy is generally to rambo into fights with aphotic shield on and then when i get close enough use death coil on an enemy. the enemy takes 400 damage (not reduced) and you take none. why? aphotic shield takes the death coil damage then bursts and also damages the enemy.

dont be afraid of chasing enemys your ulti will deal with their team and towers

ALWAYS wait for you ulti to recharge as you are practically invincible

good luck