Warrior/Knight Help Need A Mana Tank Build

give me a good mana tank build I made this one in 2 seconds tell meh if its good
no hive pls
https://wynndata.tk/s/kq15eD

 

yours looks fine ... except thunder defenses are trash. I don't have any suggstions really. Maybe Sine? Honestly stardust+aqua+tide=12 mr, so any other items are just for the defenses and damage. Getting Gigabyte+Sine+thunder powders is a pure boost to damage over memento and DFN (the averages are about 20 dmg lower, but the max rolls reach over 400 more than memento with water powders).
Sine (all SPs used): https://wynndata.tk/s/jaOhVM Memento (all SPs used):https://wynndata.tk/s/UKTIrk
EDIT: My analysis on these builds assumed you would want to hit the cap on mana cost reduction. You technically can get better defs for both of these builds if you put into defense, rather than intel, but sometimes offense is the best defense when you're already kinda tough.
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Getting a little mana steal is nice since you can get mr and ms separately. Also, you don't have enough to reach 68 def (50.3% def) so there is that to consider when using sine/giga/thunder, you'll notice a little more damage recieved (approximately 6-8% more since you can get a maximum of).

Also you said no Hive but I was bored and made this: https://wynndata.tk/s/mlUf6s
Kinda Life/Mana steal element tank. Looks like it could be really good with some earth and thunder powders on the armor (air defs can kys).

 

thanks I will try the sine build