Moon Veil Dragon

Flying
Whenever black creature enters the battlefield you gain life according to its power.
Whenever a black creature attacks put a 0/1 black infected baby dragon creature token with lifelink and deathtouch.
{t}{7} Give a +1/+1 and swampwalk to all token creatures you control.
"The Moon Veil dragon infects baby dragons, so that they could infest the land so that the Moon Veil dragon can use it as its territory"