If this was a permanent, the opponent would have no chance against you if you were doing an
/
stall with Animated Arsenics and these cards. As a spell, however, it matches Poison/Deadly Poison in decks that have a surplus of
quanta, and it makes it redundant with the theme of
/poisoning.
More importantly, I'm kind of bored of 'Poison' cards. Purify is finally getting a change to make it used more in decks, but also adding more poison mechanics doesn't mean that Purify is going to be seen in everyone's hands for free healing.