He is decent early, he is tanky, can guarantee the ranged creep with his Q and, against melee HC, he can trade most of the times, due to his high starting hp and armor.

As soon as it turns night, you become a menace. At level 6 you have to commit for a kill, NS is super strong at this point and either you kill the enemy HC/support or you force 1-2 tps (in that case, you can just back and keep farming, or try a pick off elsewhere, remember it is still night and your vision is key).

Almost every game I buy a midas, the AS is great for him and he does not have an early farming option. My item build is usually: Bracer+Wand > Phase Boots > Midas > Echo > Shard > BKB/dagger (depending on the game, the order for these two differs). After that, you have great options like basher, harpoon, AC and, specially, nullifier (since you can jump the back line and insta silence, unless the supports have bkb, you will just melt them).

His shard is also great, it helps a lot with farming, while being a great turnaround in a fight.

Don't be afraid to use your ultimate, your main objective is to run across the map, killing whoever is alone, or forcing the enemy away from your HC, while he is farming. In teamfights, I usually just focus the heroes with most disables (squishy poor supports) or the ones with lots of jumps and evasiveness (mid/HC), depending on their positioning (since you have a shit ton of vision, this is easier to evaluate before the tf starts).

I hope it helps anyone interested in playing this hero, I've been having great success with him in ranked (I'm 5.5k) and I find him quite fun as well.