Dota 2/Lanaya the Templar Assassin

Templar Assassin is a ranged agility hero who can be played as a ganker or a carry. She has great survivability despite her relatively low health due to her Refraction and Meld. Refraction effectively forces her enemies to waste a few attacks before injuring her while her Meld lets her remain invisible at one spot for as long as she needs. Her Psi Blades lets her do a lot of damage to multiple enemies if she has good positioning. She can use Psionic Trap to grant vision or to slow unaware enemies when sprang. Templar Assassin is an elusive hero, though if one becomes her target it will be hard to escape.

Refraction
Refraction renders you invulnerable to attacks for a certain amount of damage instances while also increasing your damage. Its duration is as long as its cooldown, so if you have mana and Refraction doesn't get dispelled early, you can cast it on yourself again as soon as the previous Refraction wears off. You will be using this a lot, as you are quite frail compared to other ganking or carry heroes, to make yourself more survivable during fights. The bonus damage it grants is also useful for taking down enemy heroes quickly.
 * Ability: No Target
 * Damage Type: Physical
 * Instance: 3 / 4 / 5 / 6
 * Damage: 20 / 40 / 60 / 80
 * Duration: 17
 * Mana Cost: 100
 * Cooldown: 17

Meld
Meld makes you invisible as long as you remain still. Breaking your invisiblity with an attack will reduce the target's armor and do bonus damage. It can help you escape from your enemy's sights by Melding as soon as they lose sight of you, such as behind trees. You can also use it to lie in wait for a potential prey, then surprise them out of nowhere as they walk past you. Note that if enemies do see you Meld at a spot, they know you won't be moving anywhere and will throw out target point spells at you or just reveal your invisibility with a Dust of Appearance.
 * Ability: No Target
 * Damage Type: Physical
 * Bonus Damage: 50 / 100 / 150 / 200
 * Armor Reduction: 2 / 4 / 6 / 8
 * Mana Cost: 50
 * Cooldown: 7

Psi Blades
Psi Blades gives you bonus attack range as well as letting you damage enemies directly behind the unit you are attacking. The bonus attack range is very helpful as your base range is quite poor. With good positioning, you can damage whole groups of enemies at once, even invisible ones, with the damage spill effect of Psi Blades.
 * Ability: Passive
 * Damage Type: Pure
 * Bonus Attack Range: 60 / 120 / 180 / 240

Psionic Trap
Psionic Trap creates a trap on the targeted area which will grant vision around it. Traps have 100 health and is immune to magic, and will become invisible after 2 seconds. When a trap is sprung, all enemies nearby will be slowed by 30%, which increase by 5% each second to a maximum of a 50% slow. Psionic Traps could be used as free Observer Wards to grant vision at key area of the map, like at rune spawns. It can also be used to slow down fleeing heroes as you catch up to them for the kill.
 * Ability: Target Point
 * Max Traps: 5 / 8 / 11
 * Mana Cost: 15
 * Cooldown: 11 / 9 / 7

Trap
Activates the closest Psionic Trap. Traps also has the ability to spring themselves.
 * Ability: No Target
 * Cooldown: 0.5