Venom, Pure Evil

Morph {2} (you may cast this card facedown
as a 2/2 creature for {3}. Turn it face up anytime
for its morph cost.)
When Venom, Pure Evil is turned face up put a
+1/+1 counter on it.
{x}{x}{b}: Monstrosity X. If this creature isn't
monstrous put X +1/+1 counters on it and it
becomes monstrous.
Spells you play cost {1} less to cast for each
+1/+1 counter on Venom, Pure Evil.