Hello! My name here is dsbn and you can call me as such. Improved version, I think.
Just to start things off, I decided to make this guide solely because I love playing this hero. He's my favorite hero and I just enjoy the fact that he can be so versatile.

This guide is not for pro's but it isn't for the newbs either. It's for people who want to learn a thing or two about this hero from another person's point of view.

If anyone has noticed me in the forums, then you'd definitely get an idea why I chose to make a guide about this hero. Anyways, lets begin:


Table of Contents:
I. Hero Introduction
II. Hero Story
III. Hero Stats
IV. Pros and Cons
V. Skill Build Justification
VI. Item Build and Game Phases Justification
VII. Allies and Enemies
VIII. Replays
IX. Closing Remarks

Hero Introduction

The Morphling is a dynamic hero, capable of giving or taking massive amounts of damage, at the will of the player. His Waveform allows him to escape or initiate fights with ease, while his Adaptive Strike gives him a versatile, powerful nuke or stun. His Replicate allows him to make a copy of a hero, and to take the place of the copy in an instant. Morphling's greatest strength, however, is his ability to transfer his agility points to strength, and vice-versa, allowing him to take on the role of tank or damagedealer at a moment's notice. The Morphling is a dangerously mobile enemy, who must be treated with caution before he takes you by surprise!

The Morphling, nature's magnum opus, the pinnacle of evolution, can force his liquid body to flow over opponents in a massive wave, forcibly moving himself as well as injuring his enemies. At a whim he may change the composition of his body, trading strength for agility and vice versa. Capable of manipulating his energy into either disable or damage based on his strongest attribute, the Morphling's most disturbing ability creates a literal clone of a chosen target, forcing them to face their own reflection as he crushes them in their confusion.

III. Hero Stats:

19+ 219+ 317+ 1.5
* Affiliation: Sentinel
* Attack Animation: 0.5 / 0.5
* Damage: 38 - 47
* Casting Animation: 0.3 / 0.51
* Armor: 2.7
* Base Attack Time: 1.7
* Movespeed: 285
* Missile Speed: 1300
* Attack Range: 350
* Sight Range: 1800 / 800
As you can see from these stats, he has awful starting base damage, but it will eventually get better since he gains 3 of his primary attribute per level. Another thing to point out is his below average MS. 285 is no laughing matter. Solve it ASAP with a BoT.

He gains 6.5 stats per level which is quite high for a hero, but his starting stats are something to be considered since they're not that good for a hero who relies on it. Stats solve this hero's problem, which is what this guide will focus on mainly.

IV. Pros and Cons
(+)
-High damage nuke with awesome range (1000)
-Nuke doubles as a blink
-Each of his skills has 2 or more uses and benefits
-ALL his skills can be used to escape
-Great pushing power
-Easy farming
-High agi gain
-Good attack animation
-Fast missile speed
(-)
-High mana cost for your nuke
-Low starting agi for a hero who relies on it
-MS is WAY below avarage
-Item dependant
-Early game mana problems
-Low starting base damage

As you can see, the pros outweigh the cons, but the cons have a bigger impact to your early game which is what we need to get through to become what everyone will soon fear at mid- late game.

V. Skill Build Justification
Waveform
Deals 100/175/250/325 damage in a 255 AOE. Morphling is invulnerable during Waveform. Costs 140/150/155/165 mana and has an 11 second cooldown. 1000 cast range. 1255 actual range (including the AOE).

Adaptive Strike
Deals 20/40/60/80+ 0.5/1.0/1.5/2.0x your TOTAL agility in damage and stuns for 0.25-0.75/1.5/2.25/3.0 seconds depending on the ratio of strength and agility. Knockbacks for 100-300 distance. Costs 100 mana and has a cooldown of 20 seconds. Cast range is 600/700/800/900.

Morph
Allows to Morphling to gain or lose some strength or agility. Gains two subskills.

Morph (Agility Gain)

Converts 2/4/6/8 STR to AGI per second. Costs 20 mana.

Morph (Strength Gain)

Converts 2/4/6/8 AGI to STR per second. Costs 20 mana.

Replicate
Morphling creates a literal clone of a target. The illusion lasts 30/45/60 seconds and has all the properties of an illusion. It deals 50% damage and receives 100% damage. Costs 25/25/35 mana and a cast range of 700/1100/1500.

Morph Replicate

This skill replaces Replicate once an illusion has been made. Using it will make Morphling instantly take the illusions place. Costs 150 mana.

VI. Item Build and Game Phases Justification
Game Start:


Now, any lane is good for you, but if you chose to start with the Bottle- Crow strategy, then go for mid, otherwise, stay on the side lanes where you can build up your core safely.
Now I'll explain how your skills are effective at different parts of the game.



VII. Allies and Enemies
Allies:

Stunners are your best lane and team partners. Never leave home without one.

Everyone with a slow can be good as well. Heroes with a slow usually have more than one disable.
Special Mentions:

With him, your Waveform now has a stun. He is arguably the best supporter out there, if not only second to Dark Seer.

I shall show in the form of a replay how this guy is a great ally.
Enemies:

He's a counter to everyone. Just avoid him until he dooms someone else.

An AOE Doom. His combo, though only last a short while, deals a shitload of damage if you're caught in it.
Special Mentions:

All these guys have impale based stuns. They can't be avoided by going through it. You will be stunned if you try to. Either avoid getting stunned, or use Adaptive Strike to push them back and interrupt their casting. Note that Linkens will not block their stuns when they targeted the ground instead of you.

He steals the one thing you rely on, Stats. He can be taken down with the EB combo, but best stay away unless you're sure to kill him before he gets to pounce you.

The one person who can get to you without destroying any trees, thus isolating you two and forcing a 1v1 which she is really good at. TP out since she doesn't have a stun, otherwise, use all your skills to take her down. She will be difficult.
VII. Replays
Morphling at Garena 4v5. Played with my friend Melderv and my other friends. This replay shows how to effectively use EB and the farming techniques of Replicate.
Lifesteal Core Morphling. The game ended before I could get any more items. Shows how lifesteal is a good orb for Morphling when coupled with a Frost Attack.
Tiny and Morphling. Unregistered map is fail of parser. But it's a good game.
Hectic Morphling. This replay hows a better aspect of farming with Replicate and abusing the global control it gives. Also went with the anti- mage core on this one. A very nice game.
IX. Closing Remarks
First off I would like to thank Melderv for the BB code tutorial.
Icefrog for the great game.
And all my other friends who I've played with.