Assassin/Ninja Help Builds For Level 97

I have been experimenting, but my mana regen and raw spell damage keeps being too low. So if someone has good suggestions for my level, please let me know. :)

 

The build I use on my archer(Tsunasweep over Torrential Tide). Pretty glassy, but just stack the rest of the points in Agility and you're good to go. Don't worry about Spin Attack only doing 5.75k damage, spell Assassin doesn't do much damage due to the low base damage of most weapons.
Link: https://wynndata.tk/s/DXhmZ7
If you have a Nirvana, use that over Tsunasweep(there's not much of a budget replacement for Nirvana because Thrice & Tsunasweep don't do much damage, and Hive Dagger and Slider need powders)