This list is not complete, as it was made as I went unlocking them. Anyway, I'm making this into 2 lists:

A list of Skills and their effects
A list of cards and their Skills

Unfortunately the UI is pretty bad when you want to check for what each ability mean.

1 - Skill Cards are usually random drops from generals. Also, it's easier to get common cards by playing as the character, so if you want Arslan Cards, play as Arslan, and so on.

2 - Another way to get specific ones is to complete missions in a high rank. These are usually cards related to the mission.

3 - Synthesis, where you can discard your repeated cards to try to get a new one. You need to select a minimum of 5 cards (up to 10), and while the result may be better when using higher rank cards, I already got A rank cards with 5 random C Cards. I have no idea if there is a way to control the result.

4 - Limited Skill Cards: You can find them by pressing "Switch info" when selecting a Scenario, or you can find them in the gallery in case you haven't unlocked it yet. But you need to play on Hard or higher for them.

Skill Cards have the following Ranks and characteristics:

Rank C - Cost 2 - Only the first Skill, skill will have 1 or 2 points.
Rank B - Cost 5 - Has the first 2 Skills, skills will have 2 or 3 points.
Rank A - Cost 12 - Has all 3 Skills, skills will have 3 or 4 points.
Rank S - Cost 33 - Has all 3 Skills, skills will have 4 or 5 points.

Examples:
C Rank Skills:
- Ailment Predator 2
(That's the best C Rank of this card you can get, since it has 2 on its only ability.)

A Rank Skills:
- Ailment Predator 3
- Almighty Focus 4
- Sniping Skills 3
The best A Rank of this card would have all skills on 4. Remember, that they are random, so chose the best abilities you want to keep when you are using duplicates for selling or synthesizing.


Bonus Sets seems to force all skills on a card to their Maximum, though a few may get boosted (10~15 points, for example).


You will notice that a few Sets will have a few gray status (Not all, which happens when you do not have all cards of the set), that means that gray ability is from a card that you do not have in Rank A or S (That would be the third ability), or B (in the case of second ability too).

I'm not really sure how they work though, on my "The Battle for Nasus" set, my "Attack increase" ability is grayed because of a B card, and it seems I do get the boost. Meanwhile, when there are 2 cards with the same ability, and you have only one of them, then you get only that one.

The lists are ordered by Character

So, as mentioned, I will update this list as I go through things, though considering the lack of content in this game, I haven't really been insterested in playing it anymore... Well, I also accept help from anyone interested.

I thought about also doing a list with the Bonus Sets and what you can get with them, but right now I go with only "The Battle for Narsus", for highest Attack Increase, and "A Childhood Encounter", for tons of meat drops from normal enemies when I'm low on HP. So if you are playing on a higher difficulty, I believe these 2 are the best sets for you to go with.

But if someone has more experience, or tips or whatever related to skill cards, I can add a section here, and of course, always giving the proper credits.