Holy Massive Dragon, Batman. Yeah, this is powerful alright. I wouldn't use it on my own critters when there's Epinephrine for 3
(unless it's the last round and I want to go for a finisher), but it's nice CC. Since Adrenaline adds more poison with Thorn Carapace, not even the aforementioned fatty would survive long. I like it, though it might need an increase of cost to 3/2. That's not really important though; what matters is that it's a card Life would benefit greatly from.
The issue, however, is that it's the strongest Infection spell when it comes to killing fast by -far-. That puts Life above every other element when it comes to that, which feels... off. Perhaps what we need regarding that is a buff for Plague, though, or another tool that lets us use Plague more effectively. In any case, I like.