Commander has more enchantments than ever, and between those and creatures, you have a lot of potential mana lying on the table that Nykthos can help with
Cards of this type keep other characters from being challenged, stepping out in front to shield them
Removing a game-ending threat for one mana represents incredible value even when opponents gain 10+ life, since dead players gain no life at all
One easy combo includes Ashnods Altar and Training Grounds to reduce Marneus Calgars ability to four generic mana, making two tokens, drawing a card, and then sacrificing the tokens to Ashnods Altar
Urzas Command Options for days The new cycle of Command cards in The Brothers War all have their strengths, but our favourite of the bunch is Urzas Command
Even combo plays little pure card draw any more, it may well have the odd symmetrical draw seven effect but these are usually for the ability to get back spent combo cards should the game go on a little longer than desired