Assassin/Ninja Help What Powder?

Ok , so I have a mana build with 89% spell damage.
The weapon is black , but I don't know what powder should I use.
Here's the options:
- 3 thunder
-3 fire
- 2 thunder 1 fire
- 2 fire 1 thunder
- 1 fire 1 water 1 thunder

 

The element you want to focus on also if youre doing defent types of powders put first what you want to focus on

 

Sorry for the wall of text, there is a TLDR at the bottom you lazy shits.
Get a couple things straight. What level are your powders? Because level 4 or above will guarantee you'll want at least 2 to trigger the special. Also, what stat do you have the most points in? (Intel, defence, strength, etc.). This is helpful because along with providing a scaling effect on the stat that you put skill points into, it also buffs damage that is dealt by that element (Intel=Water, defence=Fire, strenght=Earth, etc.) So most likely, since you're running a mana build, you'll want to put water powder, I assume you've beaten the first Corkus quest that rewards you with 4 T4 Blank Powders, but if you have those lying around, turn them into 1 T5 Blue (Get your hands on some more blank powder, you need Nii rune to buff them to T5, suuuuper easy to get.) , Also, LVL 5 concentration is absolutely amazing on a spell-spam assassin, so I guess enjoy that. Also, you can go get the Uth rune for T6, but you'll want to kill the boss as many times as you have time too, because it's useful to be able to make more T5 powders (or T6 If you have the dedication) even if you are just gonna sell 'em.
If you actually have the time to get 2 T6 Blue Powder, or buy it for a shit ton of LE, Take that dank shit a smother it all over your weapon.
On a second note, you might want to go for chain lighting and do 2 T5-T6 Yellow and one T4-5 Blue for that nice extra dam. Or scrap the blue (IDK why you would, blue is amazing)

TLDR: 2 yellow and 1 red, or: 2 blue, 1 yellow, or: 2 yellow, 1 blue.

 

black has like -40% water damage

 

Yeah, It really butchers blue.
I guess then the other idea would be to get Slider, or if you're super lucky, try to get Nirvana, which is really the TRUE spell spam dagger. Slider is definitely viable too, as the Spell dam up and mana regen/steal is pretty good.

 

When I think about it again if you wanna melee than fire powder for courage and than keep spin

 

Black spell spam is bae though ;-; 10k spins easily <3 i love this dagger :o not as much as my weathered but its close. (Air is still the best element :p(together with water))