An absorption over turns mechanic seems good to preserve Mark affinity while retaining what the card does.
dont' like "cannot lower costs below 2" why this min.?
I dont either
I personally don't like the idea of this card giving you free creatures or free Supernovas ('free' cards tend to be very useful in any game, not just ETG), but at the same time want it to stack to help with more expensive cards in a deck. If it can be proven (possibly by theoretical, DoT, speed to set up threats, or even a playtest) that this card doesn't heavily improve upon certain decks that rely on low-costed cards (like Frog Rush and Pestal), then I may reconsider dropping the limit.
I agree fully with Zbladder.
This card should not allow casting costs to be reduced to zero.
Particularly in the case of creatures.
One good example here is fractal (yes I know, the wrecker of many a fun idea)
Consider what happens if you use this with, say the current mono-aether psion rush deck.
You would be allowed to fractal and spam all in a single turn.
Think permanent ball lightening with shield bypass built in... this would be quite OP... granted that would take 4 of these, but even with just 3 you could pull off an ugly fractal-spider deck.
The only two zero cost creatures in the game now are ball-lightning and photon. One of them dies instantly and the other is exceedingly weak.
This card would easily make even quite tough creatures insti-spammable if costs can be reduced to zero.
If this card were to make it in with no minimum, I bet dimes to dollars you would see the meta game would become heavily dominated by creature spam duos.
Personally I would rather not see that happen as it would lead to a glut of rather uninspired decks, so I think this card needs a non-zero minimum (even if its a minimum of 1 instead of 2).