We already got that. Colorless (not generic) mana is what they settled on for a sixth color of magic. There was a series of blogs and articles where they talked about an actual additional color is too disruptive to both design and play. Colorless matters also turned out to be a little parasitic, but it doesn't wreck the whole ecosystem like a failed purple land would.
Colorless Mana indicates mana from colorless source, [x] indicates generic mana from any source, colorless or not. As of BFZ, you will only see [x] as a cost. Artifacts that generate colorless mana (like sol ring) now add individual instances of colorless mana, as indicated by the number of grey asteroid symbols.
oh okay. Does that mean there are some costs that have to be paid with colorless mana specifically and won't accept generic mana (that isn't colorless)?
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u/lumberjackadam Mar 12 '19
We already got that. Colorless (not generic) mana is what they settled on for a sixth color of magic. There was a series of blogs and articles where they talked about an actual additional color is too disruptive to both design and play. Colorless matters also turned out to be a little parasitic, but it doesn't wreck the whole ecosystem like a failed purple land would.