How long does the cards are in effect?

[tip]

Doing rounds and gotten rewards with all types of cards, some for segment, others for workers, credits, attack, defense, hitpoints, and so on.

Those for segments, I understand. Same with workers and credits.

However, I need to know how long is the effect for the attack, defense and hitpoint cards.

I tried some and found out that the effects for those cards disappear quite quickly.

But how quick, I dunno.

Does anyone know anything about what I am talking about?

[Wiley Space Cadet2]

they are there for one attack, you can set it so that the attack, hit points, defense, etc. modifiers are used on only pvp, or pvp and pve, after one of the selected attacks has been made it uses up one of the items you have used.