Decks?

I recently purchased the Nissa V. Ob Nixilis Duel set to try to get the wife into Mtg.  I haven't played in a very long time but do have some cards left over.  I put them all in my inventory.

I read a few reviews that the Nissa V. Ob decks are not balanced.  I don't want the wife getting discouraged playing a weak deck.  The more the wife likes Mtg, the more Mtg I'll be able to have in the house.

Can someone, if possible, put together 2 decks from my inventory that would be able to be played against one another? I'm not worried about any particular format.  Base mechanics is fine.