the mindgate fractal comparison doe not work one copies any card the other only creatures
It is true that maybe the two values should not be equal.
However a random card vs a specific creature sounds about equal in value to me. The random any card is not worth 3x a specific creature in any case.
Hm ... Well I like the intelligence of your comparison and the method of your comparison ... I'm just not sure I agree with the applicability of the comparison! I think there's a large difference between copying any card and being able to do that every turn, effectively keeping pace with one's opponent, and a one-time creature binge. If I analyze the numbers, the conclusion I'd draw is actually that Mindgate could cost 1 less per activation ... I suppose it's just a matter of opinion. I think the opinion that Fractal is OP could make sense and is defensible, I just don't agree with it ... and I especially don't agree that there is an objective way to call it OP like what you're sort of doing here ... To me the only objective gauge already tells us that it is not OP: that being the fact that Fractal decks are not considered broadly superior to others.
So the first question is: How a
semi random card of any type compares to a specific creature?"
I think that once factoring the semirandomness in they are about equal in value.
The second question is: How to measure a oneshot vs a wand/'on a stick'?
Here I
assume that "wands" are balanced by Activation Cost + Casting Cost of Wand/Average number of turns = Casting Cost of oneshot.
Balance is relative to the power of other cards. If Mindgate is not on par with Fractal then either Mindgate is UP or Fractal is OP. In truth, if we include spawning creatures like FFQ as card generating and casting then we have Card Generation = 2 quanta. So maybe Fractal was OP and Mindgate is UP?
However 1 thing is clear. Fractal is not Gamebreakingly OP. It is at worse off by a few quanta. Since it is not gamebreakingly OP it will not have the clear indicator that you wish to use as a gauge. Zanz is very good at card design and rarely makes anything with disastrous effects enter the game. The 2 turn sundial was the only example of Gamebreaking degree of OP.