Mewtwo by Sinraptor

Stored Power
(Passive)
When Mewtwo's channel is canceled or interupted, he can resume from where he left off. This only applies to the most recent thing Mewtwo channeled. Progress is lost upon death.

High Frequency
(Mount)
The cooldown of teleport is reduced by 15 seconds.

Miracle Eye
(E)
Mewtwo can gain experience from dying enemies from two times further away than normal.

Psywave
(Active)
Cooldown: 30 seconds
Range: 5
Mewtwo sends out an intense psychic wave that deals 94 (+4% per level) damage to minions.

Telekinesis
(Active)
Cooldown: 30 seconds
Send a target minion or non-boss mercenary flying into the air. They are stunned until Mewtwo travels a certain distance away from them or until they take damage.

Recover
(Passive)
Mana and health gained from Regeneration Globes is tripled.

Shadow Aura
(Q)
Duration: 6 seconds
While Mewtwo is channeling Shadow Ball, he emits a ghost-type essence that deals 25 (+4% per level) damage every second.

Future Sight
(Q)
If Shadow Ball reaches maximum range without hitting a hero, it returns to Mewtwo at his current location.

Light Screen
(W)
If Barrier's shield breaks early, all nearby ally heroes gain 15 armor as well.

Psychic Infinity
(Active)
Cooldown: 80 seconds
Cost: 80 Mana
Range: 8
After a short delay, Mewtwo fires an orb of pure psychic force at an enemy hero that deals damage equal to the total damage the target dealt in the last 5 seconds. For 10 seconds afterwards, Mewtwo gains 10% Spell Power.

Vanishing Strike
(Active)
Cooldown: 120 seconds
Cost: 80 Mana
Range: 8
After a 2 second channel, Mewtwo blinks into melee range of the target and punches them to deal 386 (+4% per level) damage. For 10 seconds afterwards, his basic attacks become melee range, but gains 10% movement speed.

None Shall Interfere
(Mount)
When Mewtwo teleports to a location, he pushes all enemies away from him.

Sharply Increased Defense
(W)
Barrier reduces all damage from enemy basic attacks by 50% while the shield is active.

Unbreakable Will
(W)
Mewtwo becomes Unstoppable for 1 second after activating Barrier.

Pressure
(Passive)
Ability cooldowns of nearby enemy heroes recharge 15% slower.

Mew's DNA
(Passive)
Mewtwo gains 8% increased health, health regeneration, mana, attack speed, and attack damage.

Giovanni's Mech Suit
(Active)
Cooldown: 100 seconds
Duration: 15 seconds
After a short delay, Mewtwo equips mech suit that grants him increases the range of his basic abilities by 50% and recharge their cooldowns 100% faster, but disables his ability to move. This can be reactivated to cancel early.

Psychic Overload
(R)
Radius: 3
Psychic Infinity now affects all enemies in an area around the target.

Psychic Beatdown
(R)
After Mewtwo hits his target with Vanishing Strike, he gains 80% attack speed for 7 seconds.

New Life
(Passive)
Cooldown: 180 seconds
Upon taking fatal damage, Mewtwo enters stasis for 3 seconds and heals himself for 721 (+4% per level) health.

Sphere of Chaos
(Q)
Shadow Ball no longer requires channeling, is always at maximum charge, and its cooldown is reduced by 5 seconds.

Purge the Meek
(E)
Psystrike's area of effect is now a 60 degree cone and reaches 30% further.

Pros
- Strong burst damage
- Mewtwo's abilities pass through minions, providing significant poke damage
- Mewtwo's wave clear and cloning trait allows him to sustain lane pressure throughout the mid and late game
- Teleport can be used to transverse terrain as means for catching low health enemies off guard or as a possible escape tool
Cons
- No self-sustain
- Relatively bad at one on one fights
- Possesses no form of Crowd Control while also being notably vulnerable to it
- Except for Barrier, none of Mewtwo's abilities have an instantaneous effect, so using him requires a lot of planning and accurate predictions

Health: 2151 (+4% per level)
Health Regeneration: 4.93 per second (+4% per level)
Resource: 500 (+4% per level) mana
Attack Speed: 1.0
Attack Range: 5.0
Attack Damage: 132 (+4% per level)

I put in a bunch of Easter Eggs that give this concept more flavor. I've listed a few that might not have been as obvious as using Mewtwo's moves as talent names. For example, most of the numbers in Mewtwo's profile have significance.

1: Shadow Ball's minimum and maximum damage are Pikachu's and Mewtwo's Pok