Typically this is more of an agro card than a control card but is playable in any deck
Between the two commanders, Eowyn, Shieldmaiden and Aragorn, King of Gondor, you have two great ways to generate tons of card advantage and board presence
In fact, I defended it to numerous people in playtesting
In cEDH, this is the most important color, since it gives you access to the free counterspells necessary to survive, and the best draw engines in the format in Rhystic Study and Mystic Remora
They change only the amount of combat damage the creature assigns and how many counters are put on a permanent with station when the creature is tapped to pay the cost of a station ability
You can also hide it on top of your library in response to artifact destruction