First of all, interesting card idea - the theme is cool and consistent with its elements.
The only slightly puzzling issue is that this card behaves randomly but has no link to the entropy element. This is not a huge deal, but only a few cards outside of entropy behave randomly, with all of those relating to quantum generation / consumption (quantum tower, devourer quanta munching, playing cards without specified element cost).
From a game mechanics perspective, it seems like this card would have a definite, useful niche and not be appreciably OP / UP.
How about Radiation? Photon/RoL and Spark/BL are both creatures of pure energy, and radiation is the emission of energy. So the Aether would be radiating Photons and Sparks.
yea but radiation sounds too much like 'nuclear aftermath' rather than 'the giving off of energy' in this day and age. maybe something like: kinetic? all energy involved in photons and sparks are kinds of kinetic energy, as opposed to potential energy.
As for naming the ability to generate photon / sparks,
radiation does in fact make sense for generating photons (gamma and x-ray radiation both refer to emission of photons in certain wavelength ranges), but doesn't make much sense for generating sparks.
Maybe something like
pulse would be generic enough to accommodate both but still be thematic? (pulsars emit gamma rays and no doubt a few very short-lived sparks ...)
What about something simpler, say Emission or Emitter?
(the ability name
emission makes me think of something else entirely
)