I encountered the same problem.
Pufferfish, Epinephrine & Momentum. Attacked 4 times. Only put two poison on my opponent...
Would it really be that unbalanced if it gave 1 poison per 1 attack?
This way, 6 Pufferfish + 6 Epinephrine = 12 Poison per turn. Provided it is not blocked.
Other way, 6 Pufferfish + 6 Epinephrine = 24 Poison per turn. Again, not blocked.
But it is a very expensive combination.. I mean, 30 Water Quanta for the Puffers, and then a further 18 Life Quanta to put the Epinephrines on them... That's a total of 58 Quanta... In any game, if someone lets you put this kind of damage on the table, without any Shields to block it, or any kind of creature control... Then, I say, let them suck on 24 poison a turn.