Earth Splinter has been one of my favorites. I start level up that Splinter (as @SumatraNate) before realizing all of the pieces and components of the game.
I have stuck with it and Maxed out a few cards. At the end of the day, I would prefer to see earth pop up over any other splinter for my daily rewards.
I think it is good to play at lower levels again even after playing at high levels. It could come in handy when competing in tournaments.
Ah yes....tournaments! Another thing I've been sleeping on.........wake up @mistakili ! Thanks for mentioning that.....
P.S
I love to use the chicken as extra piece behind for goodluck hehe