Are you ready for Chaos? It looks like yes... But don't worry, there are no global catastrophes and 1000 creepers under your house (not yet). The mod was originally developed as a fan mod UNO, but I saw something more in it, and now we have Chaos!Cards.
The mod adds cards that may be somewhat unbalanced, but believe me, I tried to stick to Vanilla.
Let's go through some of the cards that are in this mod:
Reverse - Gives effect Haste II for 10 seconds after use, CD 30 seconds.
Chaos - May give extra health and strength, or make you hurt and weakness. Try your luck.

Skip - Gives effect Resistance for 4 second after use, CD 20 seconds. Just don't take any damage, yeah.
I won't show other cards, because they have an in-game description and are extremely easy to use. hehe...
Wiki will be created later
If you want to add this mod to your modpack, just provide a link in the credits to the mod page, okay?