I think Rakdos is one of those cards you have to play intelligently. Like when you know your opponent can't do anything, you can put the final nail in the coffin with an attack from him even if it costs you your lands because you know it will hurt your opponent more than it hurt you. Following a board wipe, Rakdos is pretty good.
Dunes of Zairo
SHANDALAR
Innistrad - The Darkest Night
~THE RAVNICAN CONSORTIUM~
A Community Set
Commander: Allies & Adversaries