Massacre, Symbiote of Doom

Bestow {3}{b}{b} (If you cast this card for its bestow
cost, it's an Aura spell with enchant creature. It
becomes a creature again if it's not attached to a
creature.)
Deathtouch, menace, indestructible
Enchanted creature gets +5/+5 and has
deathtouch and menace.