Yeah, but counters poison rather than inducing it. And considering that most creatures that are most vulnerable to poison (e.g. AdrenaFrog against Thorn Carapace) have no active abilities, it seemed a decent addition.
the problem is that there isnt that many cards that induce poison to creatures, and those cards are usually not very used except maybe plague (and liquid shadow), and in this case, this card gets raped by plague, for being cheaper and targeting all your creatures...
and 2 damage for 5
is horrible, very horrible... just compare it with lightning: 5 damage-2