Players can't respond to mana abilities, so no player can take any action to stop you from getting the color of mana you expect to produce once you announce the ability.
08-04-2016
wotc
Colorless cards have no color, so you can't add {C} this way.
Random a card of Magic: The Gathering (MTG), but you can also roll the D20 dice, random a Planeswalker, have fun with the random rules and more.
: Choose a color of a card in your graveyard. Add one mana of that color.
Bastien L. Deharme2016-04-08
