Sauron, the Lidless Eye is a straightforward card with decent power, though its flavor is rather weak and its abilities are only mediocre for a legendary creature of this caliber
We reserve the term grading for the act of determining numerical measures of quality, most often performed by professional grading services
Sacrifice fodder are the creatures you want to sacrifice
The official deck construction rules for Commander (nee EDH) at say that 'A card's colour identity is its colour plus the colour of any mana symbols in the card's rules text.' How does this apply to dual-faced cards with faces of different colors, such as Civilized Scholar / Homicidal Brute out of Innistrad or Elbrus, the Binding Blade / Withengar Unbound from Dark Ascension, where the color of the transformed face of the card is different from the color of the 'main face'
And its a great storm commander
Aside from the various Traveling Chocobos that have sold for thousands of dollars, the surge foil version of this Sephiroth is the single most expensive card from the set, with a current market price of $484