Moggcatcher fetches goblin permanents from your library for 3 mana and a tap, which is insanely good value in goblin decks without much access to creature tutors
Tyranids (green-blue-red): Ramping into huge creatures is classic Commander gameplay at its best
Track down the new rare you just want to play somewhere
Commander Overview You actually get two Commanders with this deck, thanks to the partner mechanic, although this is a slightly more restrictive version, as cards may only partner with cards named in the rules text
Yes, more and more cards are designed with ward dialed up and down to be a protective boost, and the range of influence is quite wide
A particular favourite of mine is Zendikar Rising, which took landfall cards and turned them into retro travel posters to reflect the planes intrinsic connection to the land and environment