The strongest Raijin build!

Raijin pounds his drums sending forth a peal of thunder in a line, then another, then two at once, each growing wider as it travels. The thunder deals Magical Damage to Enemies it hits.

Ability Type: Line, Damage
Damage Per Shot: 30 / 45 / 60 / 75 / 90 (+30% of your Magical Power)
Range: 65
Cost: 50 / 55 / 60 / 65 / 70
Cooldown: 12s

Raijin marks a target enemy by dismissing his ally Raiju, who deals damage as he hides in the enemy's navel. While asleep, Raiju slows and reveals the target to Raijin's team on the minimap. The next time Raijin hits the target, Raiju awakens and claws his way out, doubling the slow and damaging the target and 5 nearby enemies every .5s for 2.5s in his attempt to flee. Subsequent enemies hit take decreased damage.

Ability Type: Target, Slow, Damage
Initial Damage: 20 / 30 / 40 / 50 / 60 (+15% of your Magical Power)
Damage Per Tick: 20 / 30 / 40 / 50 / 60 (+15% of your Magical Power)
Bounce Damage Per Tick: 14 / 21 / 28 / 35 / 42 (+10% of your Magical Power)
Mark Duration: 4s
Slow: 15%
Radius: 12.5
Cost: 60 / 65 / 70 / 75 / 80
Cooldown: 15 / 14 / 13 / 12 / 11s

Raijin sends a bolt of lightning crashing down at his ground target location mesmerizing enemies, while Raijin himself ascends into the sky. Shortly thereafter he crashes down at that location, doing a burst of damage to all enemies in the area.

Ability Type: Circle, Mesmerize, Damage
Thunder Damage: 60 / 75 / 90 / 105 / 120 (+50% of your Magical Power)
Mesmerize Duration: .3s
Range/Radius: 60/25
Cost: 70 / 75 / 80 / 85 / 90
Cooldown: 17 / 16.5 / 16 / 15.5 / 15s

Passive: Raijin gains increased Attack Speed.
Active: Raijin flies above the battlefield, beating his drum 4 times to summon peals of thunder. With each hit, he has a choice of three beats:

Beat one: 100% damage
Beat two: Taunt and 30% Damage
Beat three: Fear and 30% Damage

While in the air, Raijin suffers a 20% Movement Speed Slow.

Ability Type: Line, Crowd Control, Damage
Damage Per Hit: 100 / 135 / 170 / 205 / 240 (+40% of your Magical Power)
Taunt Duration Per Hit: .5s
Fear Duration Per Hit: .5s
Attack Speed: 5 / 10 / 15 / 20 / 25%
Range: 100
Cost: 90
Cooldown: 100s