Interesting. Obviously better than the Sol Ring inspiration; but only as long as you can find something that needs you to tap artifacts as a cost. Which means this can't really be used effectively on the first couple of turns when it would be so abusive.

Of course, it also means that this can only go in certain decks specialised aorund it - which means it's those decks that would need to be balance against, rather than this card on its own.

The issue is that in a deck that can freely repeatedly tap this (using e. g. Lodestone Myr) it is immediately infinite mana. Whether it adds or or becomes irrelevant.

Suggested "Activate only once each turn." And I'm fairly certain that's still busted with improvise. I could see a White Lotus, but still would be hesitant, because these cards serve only to get unreasonable results out of reasonable cards.

Did you post this on reddit some 2 months ago? I don't see why you thought it needed buffing. If anything, the comments indicate it should have the "Activate only once each turn" added to it and keeping the mana production at .

Ah true, if you have repeatable tap for or less then this does rather go nuclear. Which does mean this needs to cost more, or all of the enablers do. And as SI pointed out, they don't.

Oh, didn't know someone posted it (also I'm not the same person btw, and the similitude is totally coincidentally. Kind of weird)

• Mana cost 1-->2
• Now the ability can only be used once a turn

Somewhat biazarre coincidence - but I guess the name is kind of an obvious one to choose for a mirror effect of this kind.

Well, I'm sad to see the infinite mana combo go. But I guess this is a safe sensiblish card now. (As sensible as the untap cost ever got, anyway)