I actually kinda like it mechanics wise now. Might be slightly OP still without an added shortcoming but removing the quanta gainback helps a lot I think.
I almost want to say it should consum remaining fire quanta, like sky blitz or fractal... which would make a truly scary combo if you could pull off the trio... With ball lightening it may be an OTK...
Optimally (with an otherwise empty hand)
(BL + Fractal -> 5 BL + This + Sky blitz -> (5+3)*5*2 = 15*5*2 =75*2 = 150! Thats a half blood OTK for 30 quanta + 4 cards... not quite a perfect FG hunter, but still pretty nasty... seems fitting that it would drain 3 quanta pools...
The primary use of this card will be with massive creature swarms. E.g. sparktals and skelly or infected cell spammers. The false god Fire Queen would be a real terror with this too.
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Art suggestion: One way to get the sigma to pop out would be to add a layer over top with the symbol in Black and the rest transparent... like putting a cookie cutter over top. Should be pretty easy in GIMP or Photoshop... Or even just open it in paint and use the brush or spray paint or text box tool.
