Absorb is a wonderful second Counterspell for traditional white-blue-style control decks, giving them two things they want and nothing they don't
Ox of Agonas, Old One Eye, and Ebondeath, Dracolich require too many resources to want to regularly sacrifice to Carrion Feeder and other payoffs
A shooting star was first used, but starting in 2004 this also became the DCI symbol
Some things that may draw you into specific colors are: A really strong rare you're excited about Plenty of "removal" cards that can deal with your opponent's creatures A lot of playable cards in that color A good "mana curve" in that colormeaning lots of creatures of different costs Ideally, the colors you pick will have all four of these criteria, but if two or three of those are true, that's plenty good
Honorable Mention #3 - Ninja of the Deep Hours If you are like most of the players of this game called Magic, then you will want to spend some quality cuddle time with Ninja of the Deep Hours