Cole, Advocate for Demons

When Cole, Advocate for Demons enters the battlefield, put a +1/+1 on a Demon.
Whenever a Demon enters the battlefield, put a +1/+1 on Cole, Advocate for Demons.
Escape—{2}{w}: Exile 2 Non-Demon cards in your graveyard.
When Cole, Advocate for Demons escapes, gain 2 life.