I would make these cards myself, but I don't have enough free time to start designing art and all other stuff, so maybe someone with more time can steal and do this.
Jack-of-all-trades | SpecialistType: Creature
Cost: 4

| 5

Stats: 2/3 | 3/4
On every turn Jack-of-all-trades gains one passive and one active skill with random cost (between 1-3 quantum) and loses all previous skills. (for example: When played it gains venom and 3

burrow, next turn it has airbourne and 2

ablaze and so on..)
Specialist (upgraded version) works the same way with the additional skill:
pay 3

to stop changing skills (so you could stay at skill that you like/need).
Landslide | Rolling stonesType: Sorcery
Cost: 7

| 9

Landslide turns all pillars/towers (including opponents) to 2/2 creatures until the beginning of your next turn(they still generate quantum).
Rolling stones turns all pillars/towers to 2/2 creatures permanently. Color of creatures is same as quantum they generate.
Thief | RogueType: Creature
Cost: 4

| 5

Stats: 1/2 | 1/3
On every successful attack thief removes one card from your opponents hand.
On every successful attack rogue steals one card from your opponents hand into your hand.
Ritual | Sacrifice Type: Sorcery
Cost: 1

| 1

When ritual is cast sacrifice one creature to receive 4

quantum.
When sacrifice is cast sacrifice one creature to receive 4

quantum and draw a card.
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EDIT. Added few more card ideas and changed text a bit.