is high mobile hyper carry who can be either Range or Melee base on individual preference.

Idris has one of the highest base attack speed. Therefore benefits from buying items grant attack speed and heavy crystal or weapon power that significantly increasing his damage output.When building correctly,proper position and timing his late game can be dangerous, as result he can destroy the entire team if Idris when not force to be reckon with.
His strength revolves around his mobilty (one of the highest in the game) and damage output. Play Video

Divergent Paths
Idris uses stamina instead of energy. Purchasing energy regenration item improve his stamina regeneration. Upon purchasing item provide max/increase energy greatly increase his stamina. In general it's good to buy item that grants energy especially when building Cp because idris stamina drain so much.

Basically this the reason why you can be either range or melee carry.
Upon reaching 100 weapon power his basic attack reduces Shroudstep and Shimmer Strike by 1 second. Additionally each basic attack gain 10 stamina and Shroudstep becomes a blink.
In summary the more you land basic attack the more you spam abilities the more speedy you become.The more the enemy tilt and harder for them to stop. At the same time maintaining sustain on damage and stamina. In a nutshell you become a monster on melee.

Upon reaching 100 crystal Power gain 3.8 meter. Your range attack deal 85% crystal ratio with 0% weapon ratio. Your melee attack deal a less bit less amount of crystal ratio but you have 50% WP ratio. Shimmer Strike has increase range and increase the damage overtime.This is a safer choose compare to weapon however this passive has no reliable sustain on your stamina and damage. You rely on bursting target and kitting. Therefore you cannot miss your abilities or not it will be punishable.

Pros
•Extremely high mobile
•Good sustain damages and stamina
•Able to have low cool down to the point Spamming could occur
•Can snowball if get items

Cons
•Very bad early
•Rely on hitting enemy to for full potential
•Risky choice
•vulnerable to kitting and cc
•Atlas paulldron big weakness

Pros
•Insane powerspike
•Burst potential
•Descent range
•Good poke
•Good pick on high elo
Cons
•Stamina Hungry
•Rely on hitting Chakram for sustaining For stamina
• Chakram itself unreliable throwing projectile very slow and kind of awkward when using it.
•Lackluster on something when playing. There is something missing or it is just me

Throw ur Chakram at target and do some auto attack .When the Chakram goes back use Shimmer Strike then use Atlas PauldronStay in target the whole duration until end.During this time Chakram should hit your target once or even twice. Note the hitting of it is base on the distance. The further your target run the less chance Chakram will hit.As Shimmer Strike ends Idris should leap to your original position and again denying Chakram from taken to I Dr is. Then land more basic attack and before the Chakram return use Shroudstep to dodge it and again land basic attack. Soon the chakram hit your target for the last time. Up to total of six times or more or less Chakram should hit your target.

Throw Chakram and then Shimmer Strike and during that time use Atlas Pauldron to target.And then let Chakram and Shimmer Strike damage do the job.If your target is not dead, either you jump out from Shimmer Strike to a better position to escape or flank or even all in target. Note this combo is more effective when the enemy is low .

Early game
Your goal is to farm as many as you can and reach level six.
Because you need to rush either Sorrowblade or Shatterglass.
Because this item Unlock your passive easily and gives you insane powerhouse spike.
Poke Chakram to your enemy laner and it is good to hit your target at Max range Chakram.This is where it instantly return to you and gives the the return damage.A quick surprise burst Would be tilting . Use Chakram to last hit Minions too.
When you are ready to trade. Make use of Shroudstep barrier as a tool to trade the enemy and less damage you will taken from the enemy.
Idris one of those hero who has great laning phase. Make use of his kit because this is might be the only way for you to reach powerspike

The game can be yours but don't brainlessly go in and 1v9.
Idris can be kill easily. Therefore properly use of Idris abilities prevent him from dying easily while maintaining damage. Position and timing is key to gain better experience with him. Make sure play smart and be patient when trying to kill target. Remember he is a assassin not a that brain dead fighter heroes. He his very hard to play and don't spam him all the time .