Where can you find all the cards on castlevania

To obtain the cards, you must beat certain enemies. To make it easier to obtain the cards, wear clothing with high luck and(if you have it), the Thief Ring.

1. Joker card:

Enemy No. 39 Killer Clown
The joker has 2 stars rarity.
To find the Killer Clown, use a warp to go to the Great Stairway and enter the Nation of Fools painting. Travel to the bottom left of the map. On your map it should be a medium size square. Kill the Clown until it drops the joker.

2. Ace of Diamonds card:

Enemy No. 40 Coppelia
The Diamond has 2 stars rarity.
To find the Coppelia, use a warp to go to the Great Stairway and Enter the Natio of Fools painting. Warp to the warp at the top of the map. Everything should be upside-down. Run into the room to the right of the warp. (The cannon shoots a Coppelia as well!)

3. Ace of Clubs card:

Enemy No. 70 Treant
The Club has 2 stars rarity.
To find the Treant, use a warp to go to the Tower of Death and enter the Forest of Doom painting. Can you see the first save point? The room above it is a rectangle. You must go to that room. There you will find Killer Bees and a Treant.

4. Ace of Spades card:

Enemy No. 111 Yorick
The Spade has 2 stars rarity.
Uh...well...I can't remember where Yorick is, but I have a pretty good feeling that it's somewhere in one of the paintings in the room where Brauner's paintings is. In the Master's Keep. That's the room to the left of where you cured Stella and Loretta of being a vampire. Go on. Guess.

5. Ace of Hearts card:

Enemy No. 107 Nyx
The Heart has 2 stars of rarity.
I know where the Nyx is. Definitely. I marked her on my map. Use a warp to go to the Master's Keep. Run to the room left of where you cured Stella and Loretta. Enter the 13th Street painting. Find the 2nd save room(in the middle of the map). Go out of the save room. Jump up into the room that looks like a rectangle.(BEWARE: NYX CAN POISON YOU IF SHE TOUCHES YOU!)
I also used Nyx to master my Javelin(another quest set by Wind/Eric).

Hope this helped and good luck trying to get all the cards!