Then all creatures are sacrificed by their controllers simultaneously
Ideally, youll aim this at an X/1 to give everything +4/+0, at instant speed no less, and you can even target your own 1/1 token to make things easier
A commonly played answer, such as Spite // Malice that couldn't take out Black dorks wouldn't work anyway, Slay was commonly seen in sideboards as it was a free card with those cantrip fun times, and Spiritmonger could become White or Red if you needed it to
Creatures (24) 4 Curator of Mysteries 4 Horror of the Broken Lands 4 Shadowstorm Vizier 4 Hollow One 4 Cunning Survivor 4 Vile Manifestation Lands (20) Spells (16) If we wanted to go even deeper, we could start looking to stuff like Grisly Survivor
Just having this in play shaves off 1 mana for each creature you cast
Now that Ive drilled that into your head a few times, lets continue