If I understand correctly, that is 4 of those creatures for the cost of 1, since you draw and play the fourth. Not to mention, this card can stack, and be used in an otherwise Water deck with SoP. Seems overpowered.
EDIT: If I am corect again, it is OP if you have a deck of only these... since you draw 1 and generate 3, you just quadrupled your power, and when 3 of those 4 die, they generate 9 more and drawing 3, which will go on endlessly. Basically the ultimate Malignant Cell.