Alleria Windrunner (pros and cons added) by Chatpelier

Level 1 :

[Hunter's Satisfation] - Q : Ranger's Prey refunds half of its mana cost when hitting an enemy hero.

[Reconnaissance] - W : Verana's Cover can be used without beaking Stealth, and reveals a small area for 2 seconds.

[Windrunner] - E : Ranger's Senses active now lasts for 5 seconds, and Alleria leaves a trail behind her that allows allies to benefit from her movement speed bonus. (it fades once her own bonus does)

[Seasoned Marksman] : For every 6 enemy Minion or captured Mercenary kills near your Hero, gain 1 Basic Attack damage. Hero Takedowns count as 3 Minion kills.

Level 4 :

[Frozen Trap] - W : Verana's Cover now places a trap that activates when an enemy hero steps on it, dealing him small damage and slowing him by 30% for 3 seconds. Traps last 45 seconds and reveal enemies that step on it.

[Snake Trap] - W : Verana's Cover now places a trap that activates when an enemy hero steps on it, summoning snakes that last for 4 second, dealing moderate damage over time and refunding a small amount of mana on hit. Traps last 45 seconds and reveal enemies that step on it.

[Self-Control] : When below 30% Health, gain 30% movement speed and reduces the duration of silences, stuns, slows, and roots against you by 50% for 4 seconds.

[On the Hunt] : Alleria gains 40% movement speed while Stealthed. Silent Step damage bonus now applies to her first three Basic Attack.

[Arcane Shot] : Activate to increase Basic Attack damage by 40% for 5 seconds. Each attack costs 10 Mana.

Level 7 :

[Piercing Arrow] - Q : Ranger's Prey now pierce through enemies, dealing 20% less damage each time it hits an enemy.

[Tranquilizing Shot] - Q : Ranger's Prey also stuns the first target it hits for 1.5 seconds.
[Got your Back] - W : Verana's Cover's range is increased by 25% and its cooldown is reduced by 2 seconds.

[Vital Point] - W : Enemies hit by Verana's Cover now bleed for 115 (+15 per level) damage over 5 seconds. Minions and Mercenaries take double the damage.

[Knowledge of the Hunt] - E : Increases the range of Ranger's Senses by 33% and reveals the area around Alleria when activated, but the cooldown becomes 24 seconds.

Level 10 :

[Suppressive Fire]

[The Alliance Expedition]

Level 13 :

[Go For the Kill] - Q : Ranger's Prey can be cast a third time, for three time its mana cost. The damage is also increased by 15% for each successful hit on the same target. (doesn't stack with the Elven Archers)

[Master Sniper] - Q : Ranger's Prey base damage increase by 10%, and can now deal up to 200% more damage based on the distance traveled.

[Blood of the Quel'Dorei] - E : Take 50% reduced damage from Abilities while Ranger's Senses is active.

[Camouflage] : Silent Step now gives permanent Stealth.

[Giant Killer] : Basic Attacks against enemy Heroes deal bonus damage equal to 1.5% of the Hero's maximum Health.

Level 16 :

[Twin Arrows] : Lower the Basic Attack damages to 75%, but now fires 2 arrows simultaneously, hitting two targets and prioritizing heroes.

[Master Marksman's Inspiration] : Alleria gains an aura that increases nearby allies Attack Speed by 10% and Basic Attack Damage by 10%. (Alleria doesn't benefit from it)

[Trained Killer] : After killing or assisting in killing an enemy hero, gain 30% Attack Speed and 30% Basic Attack Damage for 6 seconds.

[Blood for Blood] : Activate to deal 10% of target enemy Hero's Max Health and heal for twice that amount.

Level 20 :

[Wild Arrow] - R1 : Increase Suppressive Fire damage by 30% and now roots the targets for 1 seconds.

[Elven Rangers] - R2 : Verana and the Elven Archers now use Alleria's Primary Abilities whenever she does, and last for 16 seconds.

[Nexus Frenzy] : Increases Attack Speed by 20% and Attack Range by 20%.

[Bolt of the Storm] : Activate to teleport to a nearby location.

Now you might have gotten an idea of what her kit is, but why did I chose those abilities and talents in the first place ?

First of all, we have to keep in mind that Alleria is a :
- High Elf
- Ranger
- Leader
- Specialist in killing her foes by surprise

With that in mind, I wanted her to :
- Be a Ranged Assassin
- Know if her foes are nearby
- Be able to take her foes by surprise
- Command a few units
- Bring some utility to her team


(Trait) Silent Step allows her to take her foes by surprise or flee by using her knowledge as a Ranger. Her foes are taken by surprise so they take more damage. It'll be useful to roam around and help her teammates by applying pressure on all the lanes. Later, it can be upgraded to permanent Stealth and/or giving a speed boost similar to a mount, to avoid loosing time with it.

(Q) Ranger's Prey is her only (real) damaging ability, but with good knowledge of the maps and positionning of your enemies, she can kill enemies from afar, help her teammates while soaking exp in another lane, etc. Beware of the mana cost though if you plan to spam it.

(W) Verana's Cover is similar to Tychus grenade, you can use it to flee or catch up to this fleeing enemy you wanna catch. The best thing about it is that it can be used to reveal an area and/or put a trap if you choose to upgrade it.
Note : Alleria isn't the one who's shooting this, so it comes from the sky. If Verana's summoned through The Alliance Expedition, she'll be the one shooting it.

(E) Ranger's Senses is her escape move, but also a way to prevent ganks, to track her foes down, and to catch up with them. If you want to go the support route, the upgrades can really help her team with a speed boost and a way to reveal the area around her (beware of the doubled cooldown though).

(R1) Suppressive Fire is a great way to engage fights or finish off runners. Use it with Knowledge of the Hunt to improve her range, and throw some Ranger's Prey at them while they're slowed or rooted. Traps work well with this too as they reveal targets when placed well.

(R2) The Alliance Expedition is the bursty ultimate, the one that you want to take in a 1v1 or during the really short teamfights. It'd also be very useful to take down some structures. Once you hit level 20 is when things can get ugly, because the elves now fires Ranger's Prey and Verana's Cover and gain the buffs of Ranger's Senses when you do. You could rain Ranger's Prey's arrows onto those squishies, and put a line of traps down with Verana's Cover to help you retreat. Elves are scary, especially Elvish Rangers.

*Laning :

As explained above, Alleria is an Assassin able to take her foes by surprise, track them down, and help her teammates even from afar, so if you can, roam from the beginning, if someone is able to hold a lane alone against multiple opponents.

Disappearing from the enemy team's sight will make you Stealthed until a few seconds after re-entering it. You're not Nova, you can't stay around, just go in, kill someone or apply pressure, and go out.
Don't hesitate to fire those Qs to help your mates or finish someone that felt like surviving a fight (and is backing, ahah).
Don't forget to take a look at Ranger's Senses' mark, somebody might track you down or is doing a mercs camp. Being able to spot it is of great importance.

Don't forget to soak some exp if your mates can't do it (killed, had to back, etc), you don't want to fall behind only to apply a bit of pressure.

*Objectives :

If you're on a map that needs holding some objectives (Dragon, Temples, I'm looking at you), you're really not the best. You can do some damage to take it back, especially in Dragon Shire, and also support your teammates, but you don't have the kit to stay put and wait for the enemies to engage you.

*Teamfights :

As for pretty much all the champs, your positionning is the key here. Popping your ulti to burst down an easy foe with (R1) or initiate with (R2) to help your team go in (beware of your positioning though), but save your Q and W to finish those assassins off (Knowledge of the Hunt can help here). If you have some good initiators, save (R2) for the end of the fight.
If you took a Trap talent, it can be good idea to put one somewhere in case you need to flee.
If you think that things are getting nasty, you can either ping retreat and pop some supportive ability (Windrunner for example), or disappear if you took Camouflage (don't hesitate to kill someone if you can make it alive afterwards).

(09/13/2015) :
*Range and damage added
*(R2) upped
*Wild Arrow (talent tier 7) root lowered to 1 second
*Added [Vital Point] (tier 1) / [Arcane Shot (=Searing Arrows)] (tier 2) / [Master Sniper] (tier 5)


(09/10/2015) : CD and Mana costs added. Turalyon (R1) ultimate changed to Suppressive Fire.

Previous (R1) :
Turalyon/Arator charges in a line on his horse, dealing moderate damage in a small zone on impact.
He then remains for 20 seconds, attacking enemies and granting a 10% damage reduction to nearby allies.
If Turalyon/Arator dies, Alleria gets into a rage and gains 30% attack speed and damage for 5 seconds.
Small note : Just in case this hero would be made, and bli² decides to make Turalyon aswell, this ultimate can replace Turalyon by Arator (their son) so that they're not a lot of different Turalyon fighting each other.
[For Anduin Lothar] - R (talent lvl 20)
Turalyon charges with two Knights that each deals 25% of his damage, and he now periodically heals nearby allies.