Any Profession War-oriented Consumables

War = 20 minutes max which is convenient. Also can use rare ingredients for consumables because with wars, they're reusable.

Cooking
spell damage/slight hpr - easy, cheap, good, lasts the full time.
mana regen spam - yeet, also cheap and lasts the full time, can even use lower-level T2s.
int booster - haha meme
lifesteal booster - use with glassy Alkatraz

Alchemism
damage and mana regen - requires T3 mats so kinda expensive
big boi health - for use with glass Cata, Sancs, whatever
melee dmg - and thorns I guess lol
lifesteal booster - Alkatraz getting manasteal to counter this! lol

Scribing
walkspeed and Agi - imo keep in hotbar and drink again when it times out

 

https://wynndata.tk/cr/820066840
Just join a clanmate on the warserver and activate this scroll (you should disconnect right after)
You can even use T1 stuff on this

 

use -hpr on AFKs in Detlas /s

 

Considering that war consumables save (temporarily?) you could also make consumables that last even 7 minutes because with 3 charges you'd still have enough to cover the 20 mins.

 

That's true, but it may be more advantageous to keep other items in your hotbar for quicker access. Depends on how fast you can finish a war, I suppose.

 

As HV said, the duration of the pot def does not need to be 20 minutes. filler wars take like 10 minutes solo iirc. so 3 charges of 3-4 minutes would work.
The pot recipes I use are :
https://wynndata.tk/cr/137576097
https://wynndata.tk/cr/631694203
https://www.wynndata.tk/cr/766115273
https://wynndata.tk/cr/608804773

most of these don't use t3 mats and they also use a cheaper duration booster ( purest tear)

 

I have some scrolls for you and the ingredients are easy to find too.
Earth: https://wynndata.tk/cr/640466330 For some melee dmg.
Thunder: https://wynndata.tk/cr/141720863 Ready for some melee spell spam time?
Water: https://wynndata.tk/cr/187338337 Enough spell spam?
Fire: https://wynndata.tk/cr/371178544 Let´s see, how long do you need to kill me.
Air: https://wynndata.tk/cr/528963439 Gotta go fast!!!
Rainbow: https://wynndata.tk/cr/800718901 I got everything, I guess.
Neutral: https://wynndata.tk/cr/467092619 A little bit expensive but nice

Some scrolls can be boosted with Lunar Charm.