This card definitly needs a buff. Me and JMDT were testing out a few decks with this card, and had 0 luck making an effective deck. Even using novas and throwing in CC of your own, its a pain in the butt. I would say either a cost decrease, or increasing its poison damage by 1 would be the way to go.
The life scorpion just outdoes it with adrenaline. All you would need is a
mark to fuel the unstoppables in case the opponent has shields. And you have plenty of healing to keep you alive in a deck built around it. Even if you dont get an unstoppable, you can play this card immidiaatly and do damage.
Deathstalker, on the other hand. Eclipse may sound good, but almost all upped shields block the 2 damage it would give, making your scorpion worthless again. This forces an unstoppable on it. Then you are at the 2 poison damage you get from the life scorpion and adrenaline. If you want to beat that, you have to splash a third element, life. By the time you pull all of that off, a three card combo, with 3 different elements, you could have easily done a 3 card combo with only 2 elements for the life scorpion.
and you should make a poll jmdt
I want this card buffed
edit
In an unupped environment, this card is even worse. Its harder to power it with momentum off of mark alone, and using nightfall, EVEN
FAIL SHIELDSOLAR SHIELD can stop it.