I'd already posted in the 1.30 topic about this card, but I'll add a few things here.
Having colourless permanent removal isn't necessarily a bad thing. However, it should be weaker than any mono removal, as compensation for ease of use, with the exception of the shard's element. (like how SoG is weaker than Sanctuary or Feral Bond, or how SoD is weaker than heal, unless you are using the shard-specific mark) Going by that criterion, this card should be weaker than butterfly effect in nongravity decks.
What this card is, however, is much, much stronger. It destroys 4 permanents for one thing, and that's assuming you don't abuse it with things like Eternity, Grey Nymph, Gravity Pull, Fractal, Red Nymph, Twin Universe, Fractal, etc. It's dirt cheap for another. It's cheaper than butterfly effect, pulverizer, costs the same as deflagration and one less than steal. It has only two drawbacks, one being that it takes one turn to start working (which is a good thing, and should be kept) and that it is vulnerable to creature removal. However, that last is mostly meaningless; with 15hp, the best you can hope to do is delay it with something like rewind or maybe instakill it with gravity pull if you've got a lot of creatures out. Lobotomy is probably the only really good counter to this. (or permanentless immorush :p Which is a deck I do -not- want to encourage)
Butterfly Effect and Pulverizer are completely outclassed by this. They both have a 1 turn delay as well (unless BE is played on a creature without summoning sickness) and cost way more quanta to use. They are also easier to deal with than SoF. BE you can kill the creature, usually easily, since it has to be small, pulvy you can use removal on, and it's quanta intensive, but SoF has very few answers; as I mentioned, the only really good one I can think of is lobotomy, although basilisk blood would work, too. Even cards like deflagration are outclassed by this; the only advantage deflag has over this is that it's faster. Heck, this card even overshadows Earthquake, and that's an OP card already. You could play this on turn 1 even in unupped play with nova, and smash one pillar every turn. Even if your opponent holds back pillars until this is gone, that's four turns you get where the opponent is playing around one card to their serious detriment.
This card has versatility and power. It's very cheap in quanta, it's very hard to deal with, and any deck can use it. It makes SoSa look downright bad, and that's something in itself, given how I feel about that card.
Think about the following changes to the metagame:
BAD:
-every deck will be able to play this card on turn 1 with nova or towers, and if you do, your opponent is going to either lose their pillars right away, or they have to play around it and probably lose anyway because of the huge disadvantage that causes.
-all other permanent removal except in some cases steal (and that only because of the steal part) will be replaced by this in >90% of decks
-monoearth will have twelve cards to destroy pillars with (and SoF has the flexibility to destroy other cards, too)
-pillarless immorush will gain power as it is a counter to this, and it's already a powerful, albeit unreliable, deck.
GOOD:
-lobotomy and basilisk blood will increase in usage
-all elements have PC (unfortunately, too strong pc)
Next post will have possible edits to the card (this one's too long)