(Sorry for the bad art, it's a placeholder ofc)

Imagine the interactions with Vex Crow, Mana Cyclone, but also Stargazer Luna, Archmage Antonidas and Flamewaker in Wild.

My starting point was Elemental Evocation, but for non-Elemental Vex Crow. 

It's an apparently ridiculous spell, but with subtle power. On the brink of being broken maybe, idk. I just thought it was a smart design for Mage and the new Small Spell archetype. And cool flavor. 

Imagine getting this as an option from Discover mechanics or Deck of Wonders or Babbling book or other mechanics that put a random mage spell in your hand in your BSM or freeze mage for example - you will get a nice warm, fuzzy feeling inside of you for all of this "subtle power". 

Ofc, it wouldn't fit all archetypes. But this is true for any card, isn't it?

Or are you telling me discover and random generation always give you useful options?

PS: as if cards were designed exclusively as product of random generation btw.

You don't always get a useful options, true, but I, personally, would like to avoid such a useless option. No need to dilute the mage spell-pool so hard and create such a niche card. 1 Glacial mysteries was enough and I am so happy it rotates out.

And there are already a number of cheap spells to trigger Vexing crow, Tony, Flamewalker and co.

Terrible design, would be absolutely broken with Vex Crow, Mana Cyclone and other cards you mention  while it would be completely useless if, as already mentioned above, gotten from a random spell mechanic.

Very interesting. I like your out-of-the-box thinking. I don't think blizzard would ever make a litteraly "useless" card on it's own tho. If this card isnt combined with something else it's just really nothing.

So in order to have the (kinda) same effect but a little less "useless" and a more meaningfull card I'd make something like this:

Twinspell: Magic coin

1 mana: give you 1 mana crystal.

as I said, its pretty much the same effect but it actualy DOES something and it's less OP

Sorry guys, you have all rights to judge it, and I actually asked you to do so, but let's be fair please: judging a spell exclusively with the perspective of random generation and discovery is silly. Card-pool disruption has always been a thing in the design of this game.

Random generation is still a fair point ofc, but it can't be the main one. The main one is broken/balanced?, nice/not nice? in the current cards environment (Standard AND Wild).

My starting point was Elemental Evocation, but for non-Elemental Vex Crow (which was in no deck whatsoever so far, despite the allegedly cheap spells being there, have you ever really tried the card? Or seen it in ranked games?).

I completely understand if you think this one is broken ofc. I quite think so too, and I wrote it in my very OP. I guess the very existence of Elemental Evocation + Mana Cyclone makes my card OP, all together in the same deck.

I also definitely understand if you do not care of Small Spell archetype. 

Quote from Rich_Piana >>

Very interesting. I like your out-of-the-box thinking. I don't think blizzard would ever make a litteraly "useless" card on it's own tho. If this card isnt combined with something else it's just really nothing.

So in order to have the (kinda) same effect but a little less "useless" and a more meaningfull card I'd make something like this:

Twinspell: Magic coin

1 mana: give you 1 mana crystal.

as I said, its pretty much the same effect but it actualy DOES something and it's less OP

 Now, this is also pretty interesting. But wouldn't it be even more OP in some cases? eg Sorcerer's Apprentice.

Maybe Twinspell is just too OP with very cheap spells that manipulate mana/value generation?