Hi, so, my name is Kaique, i'm a Platinum ADCarry on the Brazilian server, i'm a Varus main since 2015.

At the moment I have around 335k mastery with it, and you can say "But you're not even a high elo player or have a high mastery level" I and can say, yes you're right, but the knowledge that I have at the moment I can pass on to players that are interested in learning something from me

Basically Varus is a really safe pick, some lanes are more dangerous but nothing that can't be handle
Varus kit is really strong and you have basically everything you need, attack speed, damage, on hit bonuses and a snare

I've been playing League for about 3 or 4 Years, i'm a Varus main since 2015

At the moment i'm at Platinum V, and yes, i'm not a high elo, but i've got some time with this champion, and I enjoy playing him, and I like to pass my knowledge to others, that's why I made this guide :D

Abilities

Varus Passive, Living Vengence, is simple, when he kills a minion or a enemy champion he receives an attack speed bonus, when he kills a minion the bonus is 50% lower than the the enemy kill
A non-champion recevies a 20% + a porcentage of your current attack speed
And a kill or assist on a champion recevies a 40% + a porcentage of your current attack speed

Varus Q, Piercing Arrow, is a line skillshot that deals AD damage, you charge up to 4 seconds before cancelling it and refunding 50% of the mana cost
When you release it it can do 10/47/84/120/157 (+110% of Ad Damage) without charging it and 15/70/125/180/235 (+165% of Ad Damage) charging it
It has a fairly high cost of mana 70/75/80/85/90

Varus W, Blighted Quiver, has a passive and an active
The passive makes varus basic attacks deal 7/10.5/14/17.5/20 (+25% Ability Power) bonus magic damage and apply Blight for 6 seconds wich can stack up to 3 times, and other abilities detone the passive dealing magic damage equal to 3/3.5/4/4.5/5% (+[2% Ability Power]%) of the target's maximum Health per stack
The active makes the next Q varus uses deal bonus magic damage per stack of blight

Varus E, Hail of Arrows, fires a hail of arrows dealing 70/105/140/175/210 (+60% bonus Attack Damage) and slows the target by 25/30/35/40/45% it also reduces healing effects by 40% making varus a really good pick against healing champs like nami or soraka

Varus R, Chain Of Corruption, is a snare that deals 100/175/250 (+100% Ability Power) magic damage and snares the enemy champion for 2 seconds, after that sometime it passes to other enemys in the area
His ult also stacks 3 stacks of Blight
It's a really good team fight skill to snare and makes a high value target easier to kill

Abilities Order

Varus have many playstyles based on how well you are in lane.

Behind in Lane

If you're behind in lane you should build safe and try to farm as much as you can, to at least have two to three itens, after that you can play around your team, forcing engages for them

Even in Lane

You can play a bit more agressive in the mid/late game cause you have more gold and therefore more itens

Ahead in Lane

That's a jackpot, varus is a on hit lategame monster, so if you get ahead in itens you can do a lot of damage and turn the game around you at all times

But his playstyle also plays around the enemy comp and time of the game

Tank Composition Mid/Late Game

Against a Tank composition, you can build a Last WhisperLast Whisper as third item, with that and the new passive of Guinsoo's Ragebladeguinsoo's, AND Blade of the Ruined King you can easily shred the tanks and should have no problem

Engage Composition Early Game

Varus is really squishy, anything can you burst you really damn fast, a Leona or Thresh against you is a problem if you get caught
In lane try to play around the tower, freezing the wave or resetting it, to avoid an desnecessary engage, if you need to burn Flash don't hesitate, your life is more important than a spell, the only thing that' s gonna change on your lane is that you'll need to play safe, or else you will die

Engage Composition Mid Game

Mid game you can build an Quicksilver Sash and play safe, if you die in an engage and your team is not ahead, then that's a problem, play around the cooldowns of the engages and try to avoid as much as you can

Engage Composition Late Game

That's a problem, if you get killed in a engage and your team dons't recover, it's pretty much game, so play safe, try to get some pickoffs before fighting, again, play around cooldowns and your team comp, if they mess up one engage, you're golden, you can deal so much damage in little time, so get hitting them boy

Damage Composition Early/Mid/Late Game

Varus is squishy, but can deal a lot of damage, so don't get caught in pickoffs or do unecessary trades and you should be good
Play safe if you don't have the opportunity to pick someone off, build an Quicksilver Sash if the enemy team has too much CC and an Guardian Angel if some burst mage or assassin is strong, and remember, you don't need to play like rambo, take your time, use pickoffs to your advantage

Some lanes are harder than others, but nothing that you can't handle, right champ?

Engage Lanes
Engage lanes are pretty strong against Varus, because he's squishy, so you need to becareful, stay around minions when playing against Morgana, Thresh, Blitzcrank, Pyke, Freezing the wave and avoid bushes when against champions like , , Fiddlesticks, Karma and so on

Tank Lanes

When against more tanky lanes, you can stay safe until you get Blade of the Ruined King but don't get too cooky, one wrong step, and you can be punished and that can put you behind

Peel Lanes

Peel Lanes like Soraka, Zilean, Lulu are pretty easy to deal as varus, with some exceptions, but you can push kind of freely, and keep poking and attacking the enemy laner

Poke Lanes

Poke lanes are harder to varus,some champions like Brand, Vel'koz, Zyra, Bard, but keep in mind, apart of their range, they are just as squishy as you, so keep that in mind

I hope I've help anyone that reads this build, I could not have much elo or know everything about the game, but I can pass on what I know
Hope you liked it and enjoy playing Varus, good luck in the Rift ^^