a couple decks that I made that worked:
1:dark/death/water control. parasites kill stuff that is "frozen" by freeze, steal enemy shields/weps, devourers steal enemy quantums(good opening play), and Chyrsoa poison your way to victory.
2:Fire aggro:18 fire pillars play Farenheit, fire shield, deflagaration, and most importantly, firebolt and fire spirit. Very simple to play.
3:firefly queen+rustler combo deck: rustler:1/1 converts 1light to 2life as many times as you want each turn. Firefly queen: 3/7 once/turn can produce 1firefly for 2life. Firefly: 3/2 every turn produce 1 light energy. If you don't see the combo you shouldn't be playing this game. Gets out ALOT of creatures very fast once you start your combo up. Guardian angel, pegasus, holy light, and fog shield are goood support cards.
Just beat a top 50 who was playing otyughs and a fire deck. I stole his fire wall, killed his dragons with my parasites, and killed him with like three Chrysoara that just kept stacking him up on poison. Take that everybody who thinks that only aether, fire, and otyughs can win! This is posted about 10 minutes after my last comment
I have done quite well with a darkness deck that also uses quite a bit of death and water. Parasites and Chrysaora are the best cards with low costs, nova is an awesome first play, and dusk mantle halves all damage to you(in the form of attacks missing). Dragons are just plain awesome, but they are not the best cards. Only use a "steal" on an opponent's weapon or shield.