That's awesome! Glad you guys enjoyed it. The water idea is interesting, but even though that makes cards with negative surrounds a bit more balanced, it makes cards with positive surrounds much easier to pull off. It's something I'll think about though.
Combos are my favorite part of any card game because they give you such a great sense of discovery when you find one on your own. My favorite two card combo is tempting apple into secret agent on turn one. Lets you set the idol of death to 2 health by turn 2, which is very powerful. Probably the most interesting pure-combo deck in the game is this deck, which I've dubbed the "Meteor Apocalypse" deck:
- Shore of Origin X1
- Crystal Ball X2
- Time Capsule X5
- Worthless Coin X4
- Booby Trap X2
- Meteor Shower X1
The idea of the deck is you spend most of the early game drawing and cycling cards with worthless coin and booby trap, while slowly whittling away at the idol of death. Once you get it down to 1 hp, you play meteor shower to clear the board, all 5 time capsules which gain massive attack values, and the shore of origin to restore both idols to full health, making winning impossible for the opponent. You just have to make sure you position the cards correctly so that shore of origin can actually activate. It's a very powerful deck, but can be countered easily.
*edit* just changed the Two Example Decks file to Three Example Decks, as it now includes the deck above if you want to try it. Beware, it's kind of hard to play.