well ive still been trying out alot, there are still some i want to try out, nyx assasin and slark look pretty cool tho!

SLARK IS THE BEST.

he's my favorite hero ever since dota 1 was still a thing. with the new silver edge item he's even better.

i usually play offlane with him (although i believe safelane is more viable). just play safe until you get that op ultimate on level 6, then kill your lane opponent when he's alone. once you get your shadow blade, find lone supports for an easy kill. i usually build treads to silver edge, then bkb and skadi, the rest are situational. slark has great comeback potential after you get shadowblade even if you lost lane, so long as your allies are pretty fine. his only weakness is getting silenced, sentries/gem and his small hp amount (he can easily remove slardar and bh's ultimate by using dark pact), but if he gets about 25 stacks in essence shift in a teamfight he's really hard to kill.