If you've built up a solid board when casting your Commander, you're sure to become a target for the other three players pretty quickly, so protecting your Commander avoids the casting tax from ramping up too early in the game
FIC are Commander cards, which you can get in the Final Fantasy Commander precons or find in Collector boosters (but never in Play boosters)
Golgari is a good color combination for an aristocrats build, and Izoni, Thousand-Eyed has a decent activated ability for sacrificing creatures and getting value from them
Its color and mana value are determined by that mana cost
The first wave of Marvel cards coming to the card game will feature cards based on Captain America, Iron Man, Wolverine, Storm, and Black Panther