Dark Sign

Enchant creature permanently. (This enchantment stays with the enchanted creature even in the graveyard and exile. It can't be removed by any means)

You may cast enchanted creature from your graveyard.

Enchanted creature has hallowing. (If this creature is untapped at your endstep, put a hallow counter on it. If the hallow counters on this creature equal it's toughness, it turns into a 1/1 hallow token)