I've recently just started on searching for Combos that aren't that obvious.
My first finding was
Moldermuck +
Counsel of Heroes, which can be found
here
Now I've come across another nice combo, yet not as easy to pull off as the top one, here we go:
Infinite Severin
This deck features
Severin, the Mad Mage as your combo wincon. What Severin does is pretty amazing, as he reduces the activation cost of relics. Yet there aren't that many relics, that can actually make a big use of it, since most are "use once per turn"...
BUT
there is
Replication Cell! Replication Cell is not limited to once per turn, if you use it on a Grenadin.
Now you might say: "What? Severin aint Grenadin, n00b!"
True story, Severin is NOT a Grenadin, atleast no yet, that why we add
Counterfeiter to the deck (market). Counterfeiter can make your Severin a grenadin, hence the Grenadin Theme of the deck. Once Severin becomes a Grenadin, Replication Cell can remove him, he will remain a Grenadin even if Counterfeiter gets removed, because he got sacrificed him at the time he was.
Now 2 turns are needed (or just 1 if you have enough power) to make Severin cost 0, in words ZERO, power. Remember his special? Reduce activation cost by 1? 4x Severin = 0 activation cost. From the use of Replication Cell the 1st Severin costs 4, the 2nd costs 3, the 3rd costs 2, the 4th costs 1 and from there on every other one is free. Also you get so many Rings from his summon, that you can bust them to infinity.
Of course this deck is not prefect in any way, and I'm sure a lot of you out there will find a way to make it even better, but I hope I could help out with the idea behind it
Below are some screenshots