Ang Kapre, Wildfire Demon

X can't be 0.
When Ang Kapre, Wildfire Demon enters the battlefield, create X 0/1 black Smoke creature
tokens with "Whenever this creature blocks a creature, that creature gets -1/-1 until end of
turn."
Ang Kapre, Wildfire Demon attacks each combat
if able and can't attack unless you control no
smoke creatures.