not ANY, but EVERY. land experiment.

[Norm4eva]

So with the advent of things like hybrid mana, and spells that respond to what colors you feed into them, I had this idea and I'm not sure what the fair cost of it should actually be.

Ridiculous City of Undiscovered Caverns of Ass

(legendary??) Land

-some kind of drawback-

T: Add one mana of every color to your mana pool. (This adds a single mana to your pool which is every color.)

I'm not sure if this is potentially abusive or not - the functional difference here is, to say the least, hybrid mana spells that want to know which colors you're playing to determine their mode just got a lot less picky.  Neo filter lands also get a new best friend, as this can enable the lot of them. 

Is this a fair effect, given the right drawback?  Is tapping for pain, or CIPT enough to keep it sane?  What's the verdict?

[Matt]

This probabaly doesn't really work within the existing rules.

It sounds like you might be unclear how hybrid mana works. Graven Cairns, for example, doesn't add mana which is both black and red - each of the two mana it adds is individually either black or red, but not both.

Furthermore, a hybrid card like Shorecrasher Mimic is always blue and green, regardless of whether it was paid for with 1U, 1G, or GU. Its color is determined by the colors of mana in its mana cost, not the colors of mana used to pay for it (usually these are the same thing but for hybrid cards, that's not always true).

In fact, neither the "Court Hussar" cards nor hybrid cards see any improvement by using this card versus, say, a Rainbow Vale. Just about the only thing this DOES positively interact with (versus a baseline of Rainbow Vale) are sunburst cards.

[Norm4eva]

No, I get hybrid manas.  I know that nothing makes 'hybrid' mana.  Well except for this card What I meant about filter lands is that you can use my card in tandem with any given filter land and satisfy its mana requirement, that's all.

Didn't think of Sunburst.  Pentad Prism is sort of really good when it gets more charge counters than it should.  Engineered Explosives gets arguably worse though... EE for 5, kill your Murlodont?

I'm not sure that the rules prohibit one 'unit' of mana from being multiple colors.  There are lands that produce mana with no color, why is the opposite against the rules?

[Matt]

I'm not sure that the rules prohibit one 'unit' of mana from being multiple colors.  There are lands that produce mana with no color, why is the opposite against the rules?

I expect the current rules don't allow for it now but it's a very easy change to make, so no worries on that front.

The real question is, is this too strong? Maybe take a play from Pillar of the Paruns and make the mana only spendable on multicolor cards? Or are you set on preserving the interaction with filter lands?

P.S. When I ask if it's too strong, I don't mean I think it will win too many tournaments or ending games on turn 3 or anything like that - I mean "too strong" in the sense that right now, Reflecting Pool + Vivid lands + filter lands is probably making 5-color manabases too strong. There has to be a downside to playing lots of colors.

I'm not actually too worried about breaking Pentad Prism, as that's an Eternal-format issue, and those formats generally can take care of themselves. The exception would be if this land were good enough to justify playing it on its own - if it could just be tossed into any deck, that would worry me. Like a City of Brass that randomly gave you Sunburst Lotus every so often.

[Norm4eva]

Well.. that's what I'm asking, what's the right drawback?  Haha

I mean it's too akin to CoB to just be a traditional painland thing.  CIPT is a good way to kill a land card.  Maybe it could do the Lair thing and dock you tempo.

[Darkenslight]

Drawback:

Whenever you play another land, lose 3 life.

Too strong?

[Matt]

Too pointless and random. Drawback should have something to do with the land itself, like restricting what you can spend the mana on.

[Anusien]

Are there enough relevant interactions that distinguish adding W/U/B/R/G from adding one of any color?

[dandan]

Ridiculous City of Undiscovered Caverns of Ass

Legendary Land

T: Add one mana that is of every color that lands you control cannot produce to your mana pool.

A non-reflecting pool, a great first drop but interacts really badly with other lands especially multilands. Not sure about the interaction with Reflecting Pool though!!

[A_Outcast]

So with the advent of things like hybrid mana, and spells that respond to what colors you feed into them, I had this idea and I'm not sure what the fair cost of it should actually be.

Ridiculous City of Undiscovered Caverns of Ass

(legendary??) Land

-some kind of drawback-

T: Add one mana of every color to your mana pool. (This adds a single mana to your pool which is every color.)

I'm not sure if this is potentially abusive or not - the functional difference here is, to say the least, hybrid mana spells that want to know which colors you're playing to determine their mode just got a lot less picky.  Neo filter lands also get a new best friend, as this can enable the lot of them. 

Is this a fair effect, given the right drawback?  Is tapping for pain, or CIPT enough to keep it sane?  What's the verdict?

Ridiculous City of Undiscovered Caverns of Ass
Legendary Land
Does not untap durring your untap phase.  Pay (2) to untap Ridiculous City of Undiscovered Caverns of Ass.
, pay 1 life: Add one mana to your mana pool, this mana counts as every color.

That way you have your original land idea.  the drawback is it takes life to use the effect, however you could get to use it multiple times in one turn with colorless mana so it might have its uses.