Well, first Hooray for two new shards. YAY
Now to the details:
SoF:
Wow, this is scary. I'm glad gravity gets a Shard soon, but I never exspected it this Way. Colourless PC is powerful at all, 3 cost is defenitly too cheap and I don't understand why it should be that cheap, as Deflag just got nerfed in cost (while Fire should be the most destructive Element gravity is on the charge...).
For my favor the element-related aspect for SoF is too low. Getting a BH is nice and cool for Gravity....but not less cool for rainbows and for me thats a problem. I think it would be better to give more destructive power for gravity mark, something like:
"Destroy a Permanent and gain +0/+15 (possibly up to +20) (+0/+10 if you have gravity-mark). Generates a Blackhole in your Hand if Hp reaches 50."
SoC:
Very nice Idea but it feels a lot like SoV for aether. Sadly SoV is also a nice Idea but not that useful. The thing is: Having more than 4 SoVs still gives you a benefit, while you don't need more than 4 SoCs.
For SoC it would be very useful to give it an over-time-ability, for example "Reduces your opponents quanta storage capacity for 7 each turn, 10 if your mark is aether."
Not sure about the numbers, but I think something like that would improve this shard a lot.
General note on Shards:
They are still very annoying in arena; 24 rounds of SoSa is nothing but an autoquit, just as + 288 from 12 SoDs combined with loads of miracles. Therefore I'd suggest a cost increase for all shards depending on how many Shards has been played. For most shards this would be just an increased cost of +1 quantum for each shard you have played before, while SoSa (where a nerf is needed the most) should incraese Damageinfliction (maybe -5 additional HP for every shard played before). Sadly the Shards are not balanced that good, so SoP would get a bigger nerf from this than SoSa, so the idea is not perfect for now, but I think it's an ineteristing way to think about...
New rare other cards are not nearly as cool as say, a new set of rare weapons for each element could have been.
signed, new weapons and/or shields would be awesome