I'm glad wotc printed these combos, because people will play them, and that's free byes.
Except when they nut draw and you draw poorly, in which case you were going to lose anyways... Yeah, I share your sentiment.
I can almost see guildmage + enchant combo being competitive in a dedicated hand disruption deck. One of the reasons that deck hasn't been good is because for aggressive discard to be good you really need to devote to it, which prevents you from playing too many cards that are going to win the game (i.e. creatures). Having a reasonably in-color 2-card win combo solves that problem to a degree.
Yeah, but if you're spending cards forcing discard, you have no way to dig for or protect your combo.
Yeah, and if your opponent has no cards/answers in hand they can't disrupt it very effectively. Likely they won't even have MD answers to the enchant, and if you play guildmage after it, counterspells are the only way out for them (assuming you can achieve at least 1 point of lifeloss/lifegain) Since we're in black we have a couple mediocre tutors if necessary. It's merely an idea.