Assassin/Ninja Help Help Me

So my assassin is level 100, and I want to use the weapons Slider or Manna (from Corrupted Sand-Swept Tomb) I've checked many builds and they seem to have too low of defense, I want about 8k smoke bombs and a bit of defense. I can figure out skill points, could someone please help me :D
I would prefer not having too many master cataylsts because I have 1 rn, soon I'll get 3 with doing hive on my Assassin and lv62 Archer.

Thoughts:

Morph Stardust
Hive Chest
Earth Sanc


Manna

Diamond Fusion Necklace

 

Manna build
Pices
Hive master chest (cuz you wanted high defenses you can use hive earth chest too)
Earth sanc/vaward
Hive master boots
Any mana regen ring you want
Look up
Prowess
Daimond fustion neck


An unoriginal mini tank build with alot of mana get 68 intel 100 strength and the rest on agility

 

Why tho

 

It has 25% earth damage bonus and 3 powder slots

 

Powders it has earth damage buff and 75 strength req

 

I don't think you can do that anymore
You need at least 265 skill points for that, and this build only has 255 at level 101
Also Prowess is a necklace, dude.

 

Fucking item guide
Wait it isnt I checked it now builds use prowes and daimond fusion neck youre worng here

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You also can with vaward suma ×2 prowess and daimond fusion neck you can get way over it idk how do you math

 

Moulded Helm
Boreal Patterned Aegis
Vaward
Gaea Hewn Boots
Prism*2
Squid Anklet/Diamond Fusion Bracelet
Diamond Fusion Necklace
Manna
Try and get at least 42 skill points. Put 20 in each element, then put on the Diamond Fusion Necklace, and vaward, which will let you use the prisms. Then put enough in each skill point category until you can use everything. You should have something like 75-40-45-40-40 with all the skill point buffs. Add any remaining skill points into intelligence

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Oh right messed up; I mixed up contrast and prowess. My bad

 

Thank you everyone for the help, I'll try some of these builds

 

My Attempt