danvogelsong asked: Do you feel that the inclination to build a deck monocolor (for greater consistency, mana-wise) is a harmful thing, or just a restriction that requires the players to be creative to do all the things they need to?
Magic has two forces that pull in opposite directions. The mana system makes you want to play with as few colors as possible for consistency while the color wheel makes you want to play with as many colors as possible for access to different abilities.
I think the pressure between these two forces is part of what makes the game tick.