Cavern of Souls + Reality Smasher ?
Asked by Bockduck 7 years ago
I play Cavern of Souls and name eldrazi. Can I now play the a generic mana card and it cant be countered? For example Reality Smasher
AwesomeOctopus says... #2
so far I believe all the cards that require colorless mana are eldrazi but requiring colorless in its casting cost does not necessarily mean that. If you named eldrazi when you played cavern of souls then yes its uncounterable because its creature type is eldrazi, but not because of anything to do with colorless mana.
Epochalyptik says... Accepted answer #1
It's somewhat unclear what you're asking, so I'll run through some different points.
First, generic mana and colorless mana are different things.
is generic mana. 
is colorless mana.
Having a colorless component in its mana cost doesn't make a card an Eldrazi card. Cavern of Souls naming Eldrazi will only benefit creature cards that have "Eldrazi" in their typeline.
Cavern of Souls's second mana ability cannot produce colorless mana. It can only produce colored mana. You can, however, spend this colored mana on the generic portion of a card's mana cost and the additional effect (that spell can't be countered) will still apply.
So because Reality Smasher is an Eldrazi creature card and because it has a generic component in its mana cost, you can use mana from Cavern of Souls's second mana ability to cast it and that spell won't be counterable.
July 9, 2016 1:46 p.m.