i wonder if by the end of ths block it will be possible to have a non-custom cube with a non-poison enchantress theme
I think enchantress is pretty good already. The only "poisonous" cards are the enchantresses themselves. And replenish, if you run that. Cards like flickering ward, shimmering wings and mark of fury are great with enchantresses, but they also support heroic and extort like a boss. Also, they do stuff on their own (well, mostly just flickering ward). Everything else is just an enchantment incidentally (wild growths, enchantment creatures, god weapons, gods, auras, red cards that do 2 damage when you do stuff, control magic, card draw engines, etc.). Too bad the W/G god is awful, she'd have been perfect to tie it together.
I run Argothian Enchantress, Enchantress's Prescence and Kor Spirit Dancer and they've been good to me. I would run Venduran Enchantress, but I'm still looking for the right keyword to shapie on her.