So, my opponent is playing an eldrazi general. (EDH format, of course.) he plays a command tower. My question is, if eldrazi DON'T have a colour identity, does the command tower make any mana at all for him? I said it was questionable but I would ask the forum? So what's the deal?
It would produce colorless mana
Umm no the tower is useless if you have a commander with no colors in its identity.
RESOLVED
Correct, it produces no mana. +1 :)
By the way the rulings are very useful when having questions about a card! If you don't have them then I recomend getting yourself a rulings Christmas present ;)