It's a bit late at this point, but what if teh creature gained the shields abilities, but did NOT recieve gravity pull?
In this way it would force a 2 card combo for the same effect while sitll providing light a renewable source of defesne shoudl you choose to make use of the combo.
On another note, regarding the optomization, I fele it is put off even more simply by the way he had to bend the machanic to make the card work.
Ex: The changes he made for some shield effects when this cards ability is activated.
If the card we're truly optimal, there would be little/no need for exceptions to be drawn.
Now if the card introduced soemthnig enw entirely, say a unique effect depending on the element, then this would be justified as the card idea itself would require a description of the individual effects.
But shields(from which this card bases it's ability) are a said and done thing, having to work around them threw this card off from the beginning.
On a side note, please avoid personal conflicts in someone elses topic. It's rude to the creator and discourages other users from wanting to look at what valid points may lay in said posts.
If we're going to debate a card idea, make it civilized, look at things subjectively please.