So, last week I talked about an artifact that let other artifacts made colored mana, on the condition that they had that color. There are over 100 artifacts that are colored (most of them White, Blue, and Black because colored artifacts were released as the mechanic for the white, blue, and black faction in Alara), so it's a workable niche.
I often research my designs so I can understand templating and power levels. I ended up looking at the interesting methods that lands and artifacts have used to give players mana throughout the history of Magic.
Hated as they are, these cards have seen more nerdboners than anything should ever have to.
The grandaddy of them wall was the Black Lotus. The Moxes were up there too. The theory behind the lotus, based on conjecture, is that it's only one-use, so it's not that bad. However, dropping a four-mana anything on turn one is a really big benefit. It might be a card advantage issue, where you're effectively discarding a card for three mana (even Dark Ritual makes you pay B for that), but it's still a bargain. I can't even begin to defend the moxes, which are basically lands you can play all at once that hate Nevinyrral's Disk and Shatter.
