Cult of Rakdos

{t}: {b/r}{b/r}{b/r} and add a counter to cult of Rakdos.
Rakdos creatures you control get +1/+0
at the beginning of your upkeep.
If a Rakdos creature you control destroys
another creature put a counter on Cult of Rakdos.
If Cult of Rakdos has 13 counters on it remove
them and lose a 3rd of your life.