I didnt read all, too much
.
I dont think that rewind, quicksands and so on are really overpowered.
It depends on your opponent.
Quicksands are trash in your hand against a pillarless deck or almost pillarless(Novas., Crem., RoL/Hope) and you will lose because of not having creatures instead.
Black Holes are almost trash vs Mono Decks it doesnt heal much and doesnt take much quanta. Against rainbow it often takes about 30 quanta.
Discord can really delay your Mono deck for several turns, but it could even help a rainbow deck. And for decks playing with cards that can create creatures with skills(mutation, fractal, etc.) you will allow your opponent using much more of these skills.
Fire Shield will give a RoL/Hope no chance.
The cards I dont like so much is sundial, although its already nerfed to 1 turn.
Its annoying to wait 6 turns if the worst comes to the worst to be able to attack and then there are Otys or whatever and you cant attack either.
But I need to say its rather annoying because of the much turns and the long game than because of the effect itself. (the same for hourglasses, especially vs FG when he played 6 or so)
I dont want to imagine how devastating it would be to nerf rewind and quicksand for a mono earth.
I would be really sad seeing my favourite cards getting nerfed
Wouldnt you too?