Can Corrupted Grafstone give colorless mana?
Asked by Jallious 8 years ago
Or does this card ability fizzle if there are no cards in your graveyard?
TheFoilAjani says... #2
Corrupted Grafstone specifically mentions the color of the mana. Colorless isn't a color and can't be produced by the stone.
May 11, 2016 4:25 p.m.
dragonstryke58 says... #4
And to answer the second part of your question, I think this relates to making illegal choices regarding the resolution of an ability. Since there are no cards in your graveyard, the choice of a color for Corrupted Grafstone is impossible, therefore no mana is produced.
608.2d If an effect of a spell or ability offers any choices other than choices already made as part of casting the spell, activating the ability, or otherwise putting the spell or ability on the stack, the player announces these while applying the effect. The player can't choose an option that's illegal or impossible...
May 11, 2016 4:48 p.m.
Epochalyptik says... #5
Note that a spell or ability only fizzles if it has targets and all of its targets are illegal when the spell or ability would resolve. If the spell or ability doesn't target anything, it can't fizzle.
Rhadamanthus says... #1
Corrupted Grafstone can't make
under normal circumstances. The five colors of magic are 
, and those are the only things you can choose if an effect tells you to "choose a color".
May 11, 2016 4:25 p.m.