Matou Mansion

{t}: Add {b} to your mana pool.
{3}{b}, {t}: Create a 1/1 black Servant Assassin creature token with deathtouch.
"There were terrible cries for the first three days, but
by the fourth day, she was silent. Today, she was thrown at dawn in the worm storage to test how well she would last, but, ho ho, she endured it for half a
day and is still breathing."
- Zouken Matou