Nope, that's correct. The idea is that you have to buff it for it to be any good. So, an average of +2.5|+2.5 on any targeted creature for 1
from a creature you need to buff and probably will want to quint. Sounds fair to me. Some games, this will be really awesome when the +5|+5's start racking up, and that'll be a lot of fun.
Not so sure about the balance when we consider Fractal, however. That could turn into an almost indestructible army of veeery hard hitters rather quickly. Then again, you'll need to have a couple buffed ones out already to make that work. Still, maybe a cost of 3
to summon would be safest.