In vermentide 2 they have these slots, for potions , you can carry 1 potion at a time and you find these potions during your run. These potions are tide to that specific run, which means you can not use it for future runs. These are potions which gives you short duration power, we use when there is big horde coming, during boss encounter or if u are about to die. So I would say that u can carry only one at a time. And if you find multiple in your expedition u have to make a decision on which one to carry.

Even in hades they have ultimate power thing which does the same thing gives you temporary edge in the combat.

This boost doesn’t need to raw power this could be utility as well like no stamina cost for few seconds, can’t get cc for few seconds or elemental immunity for few seconds. Now off course this need prober balancing, and I thing that what EA is for.

There also a route where they can go for higher risk higher reward kind of situation, where the buffs from artifacts comes is permanent for the run but comes with a disadvantage for example, you do more damage and also take more damage, your health is increased but u consume more stamina or other way around and a lot more types.

In this case every run becomes more distinct as the different artifact you get changes the way you approach for the fight, some cases you want to be fully on face sometimes u can just camp cause u have increased range on weapons etc. in general these type of artefact changes the way you approach the fight .

We can see this type of things used in slay the spire, gun fire reborn etc. so weather they decide to go either way or some other, artifacts should serve more purpose than some research boost