I recommend (especially if you are going for 100% of achievements) that before you try to get all of the cards, you reach the training dummy fight on the second floor of the mage tower and complete the <Devil's Play> achievement. This will give you a huge amount of foils that should get you all of the purchaseable cards.

**for Devil's Play, I used this guide: https://steamproxy.net/sharedfiles/filedetails/?id=2647235651

On each of the stitched images of the cards, any card with a:

*BLUE border: requires a special secret to obtain.
*PURPLE border: obtained through the mycologists
*NO added border: purchaseable from traders in each of the four scribe's zones.

The cards with a purple border below are obtained by the mycologists experiments. Head to the small mushroom in between the beasts and undead zones of the map to reach the mycologists.

You will need to bring them:
2x Field Mice Cards
2x Gravedigger Cards
2x Sentry Drone Cards
2x Blue Mage Cards
**in that order**

SPECIAL:

The Great Kracken: obtained by first going to the docks in the forest and then climbing to the final floor of the tower and clicking the tentacle.

**as you can see, I did NOT obtain this card and still got the achievement, my best guess is that the rabbit card that you get from the chest on the third floor acts as a replacement for this one for the achievement. Please let me know down below if that doesn't work for you!

SPECIAL:

Drowned Soul (top right): this card is fished up from the well in the room to the left of grimora.

Bone Lord's Horn: this card is obtained by completing the <Dark Offering> achievement.

**For info on the Dark Offering achievement, refer to the first section of this guide: https://steamproxy.net/sharedfiles/filedetails/?id=2633220547

No Special Cards.

No Special Cards.