Valkyrie, The Maiden without fear

Her Stats:

Attack Type=Ranged
Attack Damage=38-49
Attack Range=600

Movementspeed=300
Turnrate=320
Armor=0.59
MagicArmor=5.5

Strength=17
Agility=20
Intelligence=17

Strength per level=1.9
Agility per level=2.8
Intelligence per level=1.6

Her Spells:

Call of the Valkyrie

Valkyrie calls forth several Battle Maidens to damage nearby enemies.
Level 1 : Deals 75 magic damage to targets in radius around self with
60% chance to hit targets outside the 600 radius but inside a 900 radius
Level 2 : Deals 150 magic damage to targets in radius around self with 60% chance to hit targets outside the 600 radius but inside a 900 radius
Level 3 : Deals 225 magic damage to targets in radius around self with 60% chance to hit targets outside the 600 radius but inside a 900 radius
Level 4 : Deals 300 magic damage to targets in radius around self with 60% chance to hit targets outside the 600 radius but inside a 900 radius
Mana cost 100/120/140/160
Cooldown 12 seconds
Deals an additional 37.5/75/112.5/150 magic damage to one random target in 200 radius

My thoughts: a great nuking spell for group fights. Dont spam this in 1v1 however, because it does tend to drain your mana. This goes especially for the early game stages

Javelin of Light

Valkyrie hurls a Javelin of Light toward a target location.
The first enemy hit will be damaged and stunned.
Stun duration depends on the distance the Javelin has traveled.
Level 1 : Deals 90 damage to first target to pass within a 140 radius of projectile. Target is stunned based on projectile distance.
Level 2 : Deals 180 damage to first target to pass within a 140 radius of projectile. Target is stunned based on projectile distance.
Level 3 : Deals 270 damage to first target to pass within a 140 radius of projectile. Target is stunned based on projectile distance.
Level 4 : Deals 360 damage to first target to pass within a 140 radius of projectile. Target is stunned based on projectile distance.
Mana cost 100
Cooldown 25 seconds
Stun duration increases by 0.5 seconds for every 150 units the projectile has traveled. Stuns for a minimum of 0.5 seconds and a maximum of 5 seconds.

My thoughts: This spell is without a doubt one of the hardest moves of valkyrie to perfect. But once you know the trajectory and the layabouts of the map, this spell is a must in any team fight. The 5s stun is something your enemies will come to fear, causing them to spent valuable gold on more wards then they should. 

Courageous Leap

Valkyrie leaps forward, charging to battle. Her courage inspires nearby allies when she lands, granting increased movement and attack speed.
Level 1 : Leaps 630 units forward. +4% Movement speed and 4% Attack speed to nearby allies.
Level 2 : Leaps 690 units forward. +8% Movement speed and 8% Attack speed to nearby allies.
Level 3 : Leaps 780 units forward. +12% Movement speed and 12% Attack speed to nearby allies.
Level 4 : Leaps 840 units forward. +16% Movement speed and16% Attack speed to nearby allies.
Mana cost 75
Cooldown 40/35/30/25 seconds

My thoughts: ALWAYS take this skill as your first. I can't stress enough on how important this skill is. Not only is it a brilliant escape mechanism, but the buff it gives you makes it an excellent chasing spell as well!

Valkyrie’s Prism

Valkyrie bends light itself, shrouding all allied heroes on the map in stealth
Level 1 : Grants Stealth to all allies for 7 seconds. 2.5 second fade time
Level 2 : Grants Stealth to all allies for 9 seconds. 2 second fade time
Level 3 : Grants Stealth to all allies for 11 seconds. 1.5 second fade time
Mana Cost 200/250/300
Cooldown 160 seconds

My thoughts: this spell will save you or your team mates or set yourself up for an ambush. Take this spell as soon as you hit lvl 6. It will save your team a lot of genocides troughout the game.

Item Build:

Early game: Start out with Crushing Claws and Mark of the Novice (for Blood Chalice) and some runes of blight. Get your marchers as soon as you can. 

Midgame: work to either steamboots or Ghostmarchers. Start building Thunderclaw.

Endgame: Upgrade Thunderclaw to Charged Hammer, then work your way to Wingbow if you have the cash.

Steamboots are great for stats, but if you are going for pure harass you might as well take ghostmarchers for the speedboost. Thunderclaw is essential in teamfights to get maximum annoyance. Wingbow speaks for itself basicly...

Skill Build:
1. Leap
2. Javelin
3. Javelin
4. Call
5. Call
6. Prism
7. Javelin
8. Call
9. Javelin
10. Leap
11. Prism
12. Leap
13. Leap
14. Stats
15. Stats
16. Prism
17 and onwards = stats

How to make the most of this build: 
You would level up the primary damage spells but try not to use them just yet until you have leap because chances are without having leap you’ll simply scare them off with the amount of damage you can do and you wouldn’t be able to chase them down. With leap you can set yourself up to stunning them with javelin to primarily do damage, follow it up with Call and shoot them a few times and as they run away you simply leap, shoot and chase them down.

Later in the game you would encounter much more group fights so the best option is to unleash a javelin in the general direction of the group fight, hopefully hitting an enemy and stunning them rendering them useless then Calling in the group and start shooting at the enemy your teammates are focused on, hopefully maiming them. As they try to flee you leap and continue shooting and hopefully your call and/or javelin is reloaded so you can use it again. If the situation gets sticky use Prism and RUN.