phase>arcane boots for him, low cd/hp chaser, he needs that mobility to land as much as he can skill one.
Bottle seems a viable item (low mana cost spells and good ganker)
I tried scadi first game with him, the slow effect doesn't affect skill 3.
Ghinsoo/eul does wonders: land ulti/ land stun/time for CDs/escape mechanisms. Dagger too I think. Dagon makes sense. Necro too.(good item for all non blinkers anyway and does wonders if the enemy is trap in the ultimate
) Shiva's, dunno(because he has already 2 low cd farm skill and he is agi(armor)) Tarasque should be better. Ghoscepter occasionnaly, against some hero it makes skill cds come back and a chance for 1/2/4skills combo.
Dunno if a dps build can work with the lazy range, anyway the cleave owns in pushing/farming and a bit in teamfights.
I see him more with supportive items late game hence he is not at all a carry(3nukes olol). You can already ban orb effects items/refresher for him, manta should not be taken too imo (low base hp, no synergie from anything except ms)