For her ultimate, she makes a token that gives your spells a permanent discount and draws you a card every turn
Spend this mana only to cast a legendary spell, and that spell can't be countered
Every Commander Deck is built with a unique strategy and uses different combinations of colors and card types to achieve victory
All four of those are pretty game-shiffting from the mass removal to the double Raise Dead to the Edict on your foes, two of those sculpted for the battlefield are pretty strong
Ashe, Princess of Darkness A good limited creature for artifact heavy decks with an aggressive tilt, Ashes size is acceptable, just watch that she trades with any 2 powered creature
Even looting effects help filling our own graveyard, so we get optimal synergy