Xilla, Sacrilegious Herald

Lifelink
While Xilla, Sacrilegious Herald is on the battlefield, each sacrilegious follower gets +1/+1.
{w}{b}: Target creature becomes a sacrilegious follower.
{4}{w}{w}{b}{b}{t}: Each sacrilegious follower deals damage directly to its owner. This cannot be countered with Instant or Sorcery cards.