This is the deck I used to get the Chains medal in Culdcept DS (achieve a 10-chain), and it turned out to be a really fun deck to play besides. At its heart, it's a blue Support deck, which is something you can't really make in Culdcept Saga, as they took out all the blue Support creatures except Bloody Pudding!

2 Bloody Pudding
4 Deadly Fungus
4 King Tortoise
2 Mad Clown
4 Pirate
4 Undine
4 Wizard

3 Gaseous Form

4 Fly
2 Holy Word X
3 Lake Leap
4 Manna
1 Omnipotent
4 Permission
1 Revival
4 Sink

Super-simple to play. Drop blue creatures all over the place - on blue wherever possible. Where it's not possible, use Sink to make the land blue. Level the crap out of Undine (though any of the Support creatures hold land very well). Use Lake Leap to accelerate the process. Use the movement spells, Permission, and Manna together for a massive boost in G intake. Use Revival if you need more of something earlier than waiting for the deck reset (and you can never have too many Undines!)

Direct damage spells hurt, but the AI rarely uses them even close to effectively. If you're concerned about it, swap in some Land Protection.