Moaning Moat

Patrol
Moaning Moat can't attack, fight, or have flying.
When Moaning Moat blocks a creature, that
creature's controller sacrifices it at end of
combat. If a creature would die this way, you
may instead pay {b} to exile it and create a 1/1
black horror creature token with fear and roving.
{b}{b}, {t}: Regenerate all other Horrors.