Folk Hero Heres a 2-mana enchantment in white that can give you a card every turn your personal Howling Mine
If your deck is artifact-heavy, then Trading Post is a great choice since you can sacrifice the copy to return an artifact card from your graveyard to your hand, and if the copy happens to be an artifact creature, you can sacrifice it to draw a card, which will let you go up on cards from the transaction
So, for example, if you sacrificed Solemn Simulacrum, then that's a flashable five-drop 5/5 that you can play as a combat trick to kill a flyer coming your way
Free counterspells are always nice enough, and although sacrificing a non-token creature is certainly a cost, its not insurmountable in the right deck
I suspect that the upcoming Mythic Championship will change that, however, and well get into the nitty-gritty of that in next weeks column