Moside by LagMachine

Moside could be played either as a safe lane carry or a dual lane roamer, but the carry build is more adviced, as he requires items and levels to be effective in the long way. His first spell, Harrowing Scream, is his main way to initiate on enemies or to escape from them, but in order to use more effectively and land the fear debuff, careful positioning is required, so, using wisely his mobility spells or getting some mobility items would help a lot in this task.
Paranoia is the ability on which his whole playstyle is centered around. To get the best of this ability, basically, surprise your enemies as often as you can and, if you want to say it like this, play as spooky as possible. This makes him a great ganker, but also gives him s great potential in lane, as he can just hide in the trees and appear near an enemy to nuke them down. The active component can be used in many ways, as an scape way, or getting closer to foes in order to land the damaging blast.
Piercing Chill is his way to stay on the top of his enemies, and also what makes him great in 1v1 scenarios. You can directly land an attack on your enemy and proc the stun, or wait until he uses his scape method, and then cast this to get close to him again. Can also be used to get on an enemy, let him use his scape abilities / items and wait for Paranoia to charge, and once its at max damage, teleport towards the enemy for quick surprise burst. As a last trick, this can also be used as a Fire Remnant, just hit a lane creep, then TP to your base to regen/pick items, and then cast in order to teleport towards the creep.
Vivid Hallucination is what makes Moside a major thread, even in teamfights, because this allows him to remove an enemy from the fight and face him alone, where you have more advantage. In a similar way to LC's Duel, your main targets should be heroes with big teamfighting or utility abilities that you want to remove, or just supports that completely depend on their spells. This also can be used as an scape method, as it both repositions and makes you invulnerable to almost all enemies.

*Starting items

-Quelling Blade really helps Moside to secure most last hits in the lane, but as it can be bought at the side shop, is more advisable to do that.
-Stout Shield give him quite needed resistance, as he has a very low staring HP.
-Tangos and a Salve to, ¿I really need to explain this?
-A situational Mango can fit well if your lane has high killing potential that requires you to be using your spells often.
-Wind Lace is situationally good, mostly of you need to get in and out of sight quickly enough to get advantage of Paranoia early on.
-Orb of Venom of the roaming build or again, if your lane has high killing potential.

*Early Game

-Blight Stone can sometimes serve to deal even more damage in a dominant lane. Also can be built into Desolator or Medallion, both good items on Moside.
-Aquila best item ingame, buy on every hero XD, but seriously, stats are nice, cost is cheap and literally solves all your early game mana problems.
-Magic Wand, okay, always is good, you loose nothing on getting one.
-Phase Boots over Power Treads as Moside requires to move quickly in lane or fights, but still, Treads can be usefull if you need more stats.

*Mid Game

-Morbid Mask is situationally good, because it helps to mantain Moside's tiny health pool, and also can be bouilt into some big late game items.
-Shadow Blade, get this in ALL your games. Not only the damage and attack speed are good, but the insibility completely removes Paranoia's downsides, converting Moside into a literal ganking machine. Also having 4 scape methods makes you quite hard to kill.
-Sange ans Yasha fit comfortably into his agressive playstyle, and also give him some health that he needs a lot.
-Desolator or Solar Crest, depends on what you or your team needs, but both help you to kill your targets even faster, so, never are a bad choice.
-Diffusal Blade adds more to your already good disabling arsenal, and makes scaping you almost impossible. Also the mana burn hinders heavily on enemy casters.

*Late Game

-Silver Edge is the logical step, also very effective against strong passives.
-Basher into Abyssal Blade to keep foes down and unable to contest your offensive.
-Nullifier to completely shut down and be able to solokill farmed carries.
-Butterfly, well, it's late game and you are an agility carry, ¿so why not?
-BKB if getting hardly dissabled or you just can't scape before dying.
-Satanic can be just what you need to survive long clashes. Also the aditional Hp is more than welcomed.
-Skadi, MKB or some other damage or durability item. is up to you.