K'rayah, The Burned Soul

Flying First Strike Deathtouch Menace
Protection from white.
Whenever K'rayah, The Burned Soul becomes tapped,put 1/1 black demon token on to the battlefield.
{b}All demons get +1/+1 and Deathtouch.
{x}{c}K'rayah, The Burned Soul gets +X/+X until end of turn.