Hello my name is Mantriel and I am a Noob.
I started with a firefly queen, rustler, empathic bond deck (Elemental master wins against AI1-2).
Moved on to a Mono life deck against AI3 (I used one of jmdt's decks) (6 horned frogs, 4 adrenaline, 5 cockatrice)
Than I tried the Mono Aether agro deck against Ai4-5 (6 Imortals, 3 dragons, 6 phase shields)
I tried a mono darkness deck, which didn't really work (6 vampire, 6 devourer, vampire dagger, nightfall).
And during this whole time, I am/was upgrading Scaredgirls Rainbow deck.
As a word of advise: if you have a "new" deck play at least 10 times with it against the AI it was designed against, you can't learn much in only 1-2 games.