Warpstone Trade

Whenever a creature dies, put a charge counter on this enchantment. At the beginning of your first main phase, add {B} for each charge counter on this enchantment.{flavor} If the Horned Rat is our father, then surely, Warpstone is our mother.{Lns}Dangerous it is; to touch Warpstone often, but that’s what slaves are for, yes-yes?