Oh, actually Starlit Wyrm. Different from what you stated, now that I look at it, but still somewhat similar.
Ahh... Never saw that one. Too bad, cause its quite a fun mechanic... I guess the only difference is that I was implying this card's buff is determined when it is first cast rather than being allowed to change as light producers come and go. But, I suppose thats a pretty fine point of difference.
At any rate, I would really like to see something like that added in. It would give RoL and luciferin some nice alternative uses other than just Hope decks.