
: Add one mana of any color in your commander's color identitycolor identityA card's colours plus the colours of every mana symbol in its rules text. In Commander, every card in the deck must fit within the commander's colour identity.. If you control a Command Tower and a Command Mine, add two mana of any color in your commander's color identitycolor identityA card's colours plus the colours of every mana symbol in its rules text. In Commander, every card in the deck must fit within the commander's colour identity. instead.
Command Towers you control have, ": If you control a Command Mine and a Command Power Plant, add three mana of any color in your commander's color identitycolor identityA card's colours plus the colours of every mana symbol in its rules text. In Commander, every card in the deck must fit within the commander's colour identity.."
Hover an underlined rule to see what it means.
Read from the rules text. A card that enables a keyword makes or is the thing; a card that rewards it gets better when you have it. Two cards interact when one enables what the other rewards.