Is this a one-time spell that gives Light to all your current creatures?Also, maybe we should just call the ability Light, since it shows under the creature graphic in the game. Elite Fireflies have the "Fire" ability.
The in development card Hope suddenly makes Luciferin/rase incredibly viable in my opinion. O_O (Shield, protects from 1 + N damage, N is the number of light producing creatures, 5 light cost) Skelly army turns into a wonderful shield.
Does it give the ability to quinted creatures. I know adrealined creatures get it, but untargetability might prevent it from working.