I'll bump this then. I've been messing around with rainbows for Arena grinding, and after a few dozen matches and some FG, I ended up with this.
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52p 55u 5fa 5og 5up 623 6qq 6qq 6qq 6qq 6qq 6qq 6s1 6s1 6u3 6u3 6u3 6u3 6u3 6u3 6u6 77f 77g 7ag 7ah 7dm 7gm 7ju 7n3 7q2 7q2 8pj
Funny thing is, I haven't upped any of these cards (save for the SN, QT, Shards and the Pulvy), all of them are from FG spins. It is random as hell, but it is still quite reliable. I just throw it together everytime, so some possible changes are:
+1 Steal or +1 Dusk Mantle
-1 Explosion and +1 Minor Phoenix
-1 Mindgate and +1 PU (although I really like the Mindgate)
-1 FFQ and +1 Unstable Gas
It usually defeates Silver easily, if you draw at least 2 SN in the first 2-3 turns.
The two blank cards are upped SoSe, they are AWESOME for this deck, it gives wicked things sometimes... and two pillars and a photon another time.