How committed are you to non-aura wins? My first thought was combat damage is a fine way for enchantresses to win, and if you're having trouble with a grindy BW opponent, a swift face-punching is the easiest way to take care of them.
Like Jeyal was saying, you don't need many (less than a half-dozen would be fine). The staples are
Rancor,
Shield of the Oversoul,
Steel of the Godhead, and
Eldrazi Conscription. You could also add
Sovereigns of Lost Alara and
Bruna, Light of Alabaster to get more mileage out of your auras.
Finest Hour is another good combat finisher.
Last thought along these lines is that you might think about moving Tuvasa to the 99, and running
Rafiq of the Many as your general (or if you like Tuvasa, run Rafiq in the 99... he's a pretty awesome pump card).
Jeyal wrote:
Or Planeswalkers- -those play nicely with your pillowforty cards. OG Garruk, in particular has synergy with your Enchant Lands, alongside making reasonably sized tokens.
This was my second thought. I'm kinda assuming you're playing with the pre-con here, and Estrid would be a good card to add in. If you want to go for the swarm-of-tokens finish (or just need more creatures to protect against sacrifice effects),
Elspeth, Sun's Champion is pretty great.
You also don't list out your lands, but there's some really powerful utility lands in Bant colors.
Alchemists' Refuge (lets you drop Leyline of Anticipation)
Gavony TownshipVitu-ghazi, the City Treeplus all the Ravnica bounce lands that you can get extra mileage out of untapping with Garruk or Estrid