Kaine by Just Q

Butterfly: The attack speed increase, as well as evasion, helps Kaine stack up his bonus damage from Life Tear and gives a faster healing advantage thanks to his lifesteal.
Sange and Yasha: Helps increases his damage and survivability thanks to the additional Strength and Agility of the item, stacking up to his good base Strength and Agility stats.
Abyssal Blade: The illusion created by Shadow Double can proc item attack bonuses, meaning the bash from Abyssal Blade helps lock an opponent in place even if Kaine is far away. Not only that, but the Overwhelm ability of the item helps Kaine lock a foe in place to increase the maximum output of his multiplied damage while in Take Control. The additional Strength from the item also grants Kaine more survivability.
Desolator: The armor reduction of Desolator increases the attack effectiveness of the Shadow Double illusion, compensating for it's reduced attack damage.
Octarine Core: The bonus health and mana, as well as the bonus Intelligence, can help Kaine compensate for his low Intelligence growth and makes the damage dealt by Noir Shock heal him thanks to the 25% Spell Lifesteal provided by the ability, especially if Noir Shock has the bonus damage given by Life Tear. The cooldown reduction also helps Kaine use his abilities more than usual.

Black King Bar: As Take Control already has a built-in Spell Immunity, the Black King Bar would seem redundant. However, the BKB can still be used for when Take Control is on cooldown, helpin Kaine buy enough time until the ability is ready. The additional Strength bonus isn't half bad either.
Manta Style: While the illusions created by Manta Style could prove useful, unlike the illusion provided by Shadow Double, however, the illusions do not grant bonus Noir Shock damage from their own Life Tear. Not only that, but the illusions created by Manta Style do not receive the +50% damage provided by the level 20 left side talent. The bonus Noir Shock damage the illusinons stack up are also useless since illusions cannot cast spells, and thus, cannot use Noir Shock. Still, some needed back up provided by these illusions, as well as the bonus Agility the item provides, isn't too bad.

When Rubick steals Shadow Double, his illusion will not be ranged, like Rubick himself, but the illusion will be a melee attacker instead, but still deals 10%/20%/30%/40% of his current max damage.

If the Lifesteal Aura provided by Wraith King is higher than the lifesteal provided by Kaine's Life Tear, the lifesteal from the aura will be the on that procs for Kaine instead, as lifesteal does not stack, especially for him.

The Spell Immunity provided by Take Control also acts as a dispel, removing all dispellable debuffs on Kaine.

Active abilities provided by items are not Silenced by Take Control.

Shadow Double/Surprise! can stack with Spirit Breaker's Charge of Darkness, meaning they can effectively gank the same enemy at once.

[*] Kaine has admitted that his attraction to non-human girls may be the demonic claw's doing, as he may slowly be being turned into an inhuman creature himself, and thus his attraction for actual human females are beginning to disperse. This is also supported by the fact that he used to have a crush on a fellow human Legionnaire girl, but has slowly lost interest in her.
[*] While he flirts with most non-human females in the game, he seems to be more genuinely attracted toMireska Sunbreeze, as opposed to the others non-human girls where he treats his flirting with them as nothing more than lustful banter.
[*] [*] His attraction toMireska, according to Kaine, is genuine, as he likes her attitude, personality, independentness and overall show of power. It is unknown what Mireska herself thinks of Kaine.
[*] The list of girls Kaine has flirted with include:
1.Medusa: He does not believe that Medusa's current appearance is entirely ugly. LikeZeus before him, Medusa cares not for Kaine either.
2.Akasha: Kaine admits that he doesn't like humanoid girls that much, but Akasha's horns and wings are, quote, "Really doing it for him".
3.Slithice: He absolutely adores her singing voice and admits that if he were to die, the last thing he wishes to hear is her voice.
4.Auroth: Kaine admits that he has always fantasized what it would be like to be with a dragon woman. Although he later admits he may die via crushing if they were to do it.
5.Mercurial: Kaine has said it himself that Spectre may be the hardest girl for him to get, considering he can't actually understand her.
6.Arachnia: According to Kaine, Arachnia's legs are absolute eye candy. Although he admits he doesn't know if he's ready to commit being a father to all her children.
[*] Kaine may no longer be attracted to humanoid girls, but it still doesn't mean he can't form a friendly, or better, familial, bond with them, as he still considersTresdin a mother he never had.
[*] Kaine refuses to flirt withAiushtha, claiming she is too innocent and pure for him to mess with. However, he is willing to be friends with her.
[*] As an child orphaned by monsters and losing his squad to demons, he absolutely loathes the likes ofDoom and is very enraged if he is compared toLion, who also willingly wields the power of a demon, but Kaine uses his power to protect others, not for personal gain.
[*] At one point, Kaine apparently idolized theMonkey King.