This seems to be an excellent target for fractal. Could I get some opinions on how strong or weak this combo would be?
Assuming you have a hand of 1 Bacteria and 1 Upped Fractal, you'll end up having 9 3|3 creatures the turn of fractal for 27

and 9

, for 27 damage the first turn, then 45 the turn after, then 63 the turn following. The opponent will, assuming no way to stop the Bacteria, be dead after 3 turns of a full Fractal Bacteria.