[CrossGuard]

So does that mean you can use how many as u like while on a battle? example:
the Alchemist is in the middle of a battle and his attack lvl is too low, he then use his ability to double the attack power of "usable once only" that adds +3 to either sides which making it +6.The person who's playing the alchemist has 4 more cards that can add +3 to either side. He then decided to use all of them while in the battle , which adds to +12 and with the ability of alchemist it then doubles to 24.

Now here comes the argument. I assume that in every class , race and fraction have their own ability which makes them unique with limited ability. example:

Cleric
Resurrection: When it is time for you to draw a card face-up, you may instead take the top card from the appropriate discard pile. You must then discard one card from your hand.
Turning: You may discard up to 3 cards in combat against an Undead creature. Each discard gives you a +3 bonus.

Thief
Backstabbing: You may discard a card to backstab another player (-2 in combat). You may do this only once per victim per

well u get the idea. i know you can use their ability anytime you want, wether its your battle or turn and the turn after that, but saving 4 or more cards (lets be honest, all people save those +3 to either side "usable once only" how many time as we like) of +3 to either side is kind of OP. Now if thats the case and we should accept it, theres a reason why we should all go for alchemist.