Demonslayer Dagger

All Creature cards are Demons in addition
to their other Creature Types.
{1}{w}{w}{t}: Destroy Target demon.
{7}{b}{b}{t}: Sacrifice Demonslayer Dagger:
Return all Demon Creature cards
in all Graveyards to the battlefield
under your control.
,,Once the Blade was a Weapon against Demons
but after it was destroyed the True war began``.