Giving an opponent a 1/1 is a small downside in EDH, although there are many better spot removal spells out there
With Kenrith, other key components are cost reducers for activated abilities, such as Biomancers Familiar, Zirda, the Dawnwaker, and Heartstone
Ragavan, Nimble Pilferer is already being hailed as one of the best 1-mana red creatures ever printed and its not hard grasp why
For playtesting a deck or filling out a Commander build, that takes you out of the game every time you draw one
While challenger decks, and in particular Pirate typal decks, may be better suited for Ruby/Steel, this color combination offers some great item synergy and card draw that will help keep you from running out of resources.
Join me next week for this year's State of Design column, where I will talk all about how I feel the last year of design went