Shield counters are particularly effective, as only one is removed on damage or destruction, and every subsequent creature that enters the battlefield gets to refresh that stockpile (assuming it hasnt run out)
Between massive mana sinks, giant Wolves, and Elven royalty, there are tons of great picks to lead your next Commander deck
Similarly, card types like planeswalkers are necessarily found across all colors
Players will earn League points for various activities - ranging from winning games (of course) to bringing a friend along, or teaching someone new how to play
As for Standard, I played Damnation in my comeback tournament, Regionals 2007
However, the powers that be didn't print Merfolk for a long time because they had tails, and thus didn't make sense as a creature running around outside of their seas