Rakdos, Hell Incarnate

: When Rakdos, Hell Incarnate enters the battlefield, put X loyalty counters on it, where X is the number of red and/or black creatures you control
+1: Rakdos, Hell Incarnate deals X damage to any target, where X is number of red and/or black creatures you control.
-15: Sacrifice all non red and/or black creatures. Red and Black creatures you control gain +1 +1 for all creatures sacrificed.