Andros, Bringer of Death

Double Strike, Lifelink, Deathtouch, Indestructible
All Demons you control have First Strike, Indestructible, and Deathtouch for as long as Andros, Bringer of Death is tapped.
{b/r}{b/r}{b/r}{t} Creatures you control gain +X/+X until end of turn, where X is the number of Demons you control.