Due to this update Taka is Mainly About Skill
is a great hero when use correctly
His perk House Kamamuka allowhim to get a crit on the first hit
and when he hits a Hero,minion,turret he gains ki
Ki increase frequency of crits and lower the cooldown down time and it also give you a speed buff
Taka flips over the enemy hero dealing damage and when he flips he doesnt take any damage
It creates a box which enemys cant see allowing taka to get away quickly he can port after using KAKU without being seen But Flare Gun, Scout Trap can reveal you
Finally His ult He leaps to the targeted enemy does a burst of damage good for finishing kills but dont if u have no energy

SorrowbladeIncrease Damage of course
Serpent MaskMore Damage more heal and you will probably need to out last them
Tension BowInstant Hit does a lot of damage which scares them
Tornado TriggerFaster healing with Sorrowblade and Serpent Mask and refresh your your speed buff
Journey BootsThe faster you can reach your oppenent with your basic attacks
5th Slot
Metal Jacket Less damage taken unless they go bone saw
Atlas Pauldron Slows Speedfreak enemy like krul if get Tornado Trigger
Crucible Saves you from enemy who go to crazy on crystal
Fountain of Renewal Saves you and your ally from almost 1 hit which can be their death
Pros
You Deal more damage
Nightmare to does with no amour
Cons
Your Food for the enemy if your alone and have no escape plan
Like no energy, journey boots on cooldown

For This Build this is different way of how the item works
Serpent Mask The key item in this build as they keep you Suriving mostly
Sorrowblade Increase Damage of course I said this just now
Bonesaw 2 reasons You do more damage if your enemy are using amour and of course Attack speed OP
Journey Boots your getaway plan
Breaking Point Faster healing with Sorrowblade and Serpent Mask and more chances of suriving
or switching this for another defensive item because they target yiu alot if you not the threat
Pros
You can sustain more Damage
And a turret destroyer
Cons
Less Damage
enemy go crazy on crystal and no crystal defensive item your dead around them

Since Crystal Taka are rarer
Note :Crystal Power or CP Tends to be on the weaker side so You usally need armour unless your the some that like to have more damage then defense
Shatterglass To increase The max Dmg of x-retsu since its got nerf a lot
5th Slot
Journey Boots Easily way to reach yur enemy
Broken Myth Helps a lot if your have a lot of crystal
Clockwork Decrease the cooldown of your skill and your avaibility to use it
Frostburn Slows enemy who chase after you or to run away from you when you x-retsu them Just X-retsu,Hit,Kaiten Hit and keep repeating until hes dead or his ally comes then kaku
Armour
Metal Jacket Beware of those who got Bonesaw if not Just Hit them until its not possible then Kaku before your death
Crucible Slightly Weak than Aegis But Hey your helping your teammates unless they are afk
Aegis Helps you with both weapon and crystal damage but less defense against WP compared to Metal Jacket
Atlas Pauldron You know it - slows enemy attackspeed and also has wp defense