Where Vipers Dwell

Bestow {1}{b}(If you cast this card for its bestow cost, it's an Aura spell with enchant creature. It becomes a land again if it's not attached to a creature.)

{t}: Add {b}.
Enchant creature has deathtouch.
If Where Vipers Dwell was an Aura, it has, "{t}: Add {w}, {b}, or {r}."