Morphling

Morphling is a ranged carry that has many flexible skills and item builds. He relies strongly on his attributes, and is an effective ganker. He has two nukes which can be utilized very well to kill heroes in all stages of the game, making him quite potent compared to carries relying only on their physical attacks. His first skill is Waveform, which is a long-ranged blink that also damages anyone between Morphling and the target. It is a very effective farming tool and nuke early-game, and gives him the flexibility to escape as well as kill. His second skill is Adaptive Strike, which is an interesting scaling nuke that damages, stuns, and knocks people back. The damage is based on his agility, and the stun and knockback is based on his strength; late-game, a Morphling with a lot of agility can be very powerful as a result of this skill. His third skill is Morph, which allows him to switch around his agility and strength stats indefinitely - he can have 1 agility and all strength or 1 strength and all agility. It allows him to switch between being strong and tanky, and adds a great deal of damage to his Adaptive Strike. In the early game, it is often leveled to allow Morphling to change agility to strength when being ganked, giving him much more health than he would normally have. His Ultimate, called Replicate, copies an enemy or allied hero. This copy deals a significant portion of the original's damage, so it is useful to use on carries. He can also teleport to it at any time, sacrificing it, which makes it a good escape ability.
 * Difficulty: Medium
 * Skill Curve: Low/Medium

Basic Strategy

 * Boots of Travel is a commonly built item on Morphling. By using Replicate, then teleporting back to base, you can then instantly return to where you were with Morph Replicate.