The mana can’t be spent to activate activated abilities of Elemental sources that aren’t on the battlefield.
01-10-2007
wotc
You can use this mana to pay an alternative cost (such as evoke) or additional cost incurred while casting an Elemental spell. It’s not limited to just that spell’s mana cost.
01-10-2007
wotc
The mana can be two mana of the same color, or one mana of each of two different colors. The mana can’t be colorless.
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.