I think the big difference between Yawgbar and Necro is when you get the cards. Yawgbar giving them immediately means you have TREMENDOUS card advantage, whereas Necro requires timing and planning, as opposed to "In response..."
It seems a little moot to me to be honest. Yea sure there is a difference between having them right now vs for next turn or as an instant but there is also a difference between 3 and 6 mana. You can play Necro faster as well as put down necro and have responses up much better.
Outside of being a combo deck, the lower cost of necro may in fact be better. If I am just playing a grindy attrition deck all I care is to draw cards and when you look at things like Sun Titan / Yawgmoth's Will to recover these two cards I would often rather have Necropotence.
My argument is more that I dont really see as much difference between the two cards. In some cases I think Necropotence may even be better due to being cheaper to cast. It obviously depends on your deck to some extent but if you have the option of having either card in your opener you could just as easily drop Necro sooner and find tutors for the follow up turn to assemble and execute that combo that you would have later dug for with Yawgmoth's Bargain. Due to all of the tutors in the format as well as being a black card to start with honestly, I think its really over hyped the differences between the two cards.
I think you can take this as both why I think Yawgmoth's Bargain isn't as bad as its hyped to be as well as a comment that Necropotence is gross. I just dont see a lot of difference between the two to be honest.
Of the current banned list, I think there is still a little wiggle room with a few cards at this time:
Gifts Ungiven - The reasons that Hermit Druid continues unbanned is a lot of why this card could be unbanned. Essentially the exact same deck that would fairly play Hermit Druid would probably also consider this card. With most cards its about what you plan to do with them.
Library of Alexandria - I think at this point the thing keeping this card on the banned list is its scarcity as well as the fear that it makes commander pay to play. This can go in any deck and it may create a rift in casual or new players and those able to obtain cards like this. Honestly at this point its price tag is high enough I dont really feel it would make any waves. Its sort of like those able to pay for a Mishra's Workshop in my mind.
Painter's Servant honestly the reasons keeping it banned seem kind of silly to me. Its a combo potential card and the number of cards that interact poorly with it are not super common among casual / newer players. Its also kind of hard to set up its combo cards. Its interaction with Iona is probably the easiest to set up and many people for a good while have asked why Iona is a legal card when its primarily the offender. Painter's interaction with Ugin, the Spirit Dragon is unfortunate but its not as if any casual player is going to accidentally put the two together. Its really hard to assemble an 8 mana planeswalker with a 3 mana creature also. Grindstone being the final card but its also really not that great.
Panoptic Mirror - from the perspective of the combo capabilities of it, its super weak. I think the reason its still on the banned list is that most anything cast every turn just sounds annoying. Wraths and turns being the most breaking but I cant think of many things worth putting on it that would not be obnoxious. This card is not really fun or good so its probably fine to stay on. I dont really expect it to come off but it probably could. Either way.... no big loss.
Recurring Nightmare - honestly, creatures have gotten better so good recursive recursion is a problem. While I think time did make Hulk and Koko manageable I dont think the same can be said about this card. In a lot of ways recursion has been scaled back in more recent years so I actually think this probably does need to stay where it is.
Tolarian Academy - I think the change away from partial paris mulligans has made opening hands less powerful. This is obviously a strong land still but I think you need to be heavily invested to really make it work. This one is controversial, but honestly where its more of an issue is with the consistency of 60 card decks. It got banned due to how fast of starts it gives but I think its actually weaker now than when it got banned due to the change in mulligans.
Yawgmoth's Bargain - its not a card really discussed but honestly I dont really see what the issue with it is. I know it can be used to draw to combo but you are talking 6 mana to draw. Tutors can do the same more precisely for less mana. I just dont really see the issue with this card but say that Necropotence is acceptable.
Of the ones I mentioned... I think that Painter's Servant and Gifts Ungiven are probably the highest chance of being removed. This is not to say they will be, but as things stand I think they are the most likely candidates to be considered.
It seems a little moot to me to be honest. Yea sure there is a difference between having them right now vs for next turn or as an instant but there is also a difference between 3 and 6 mana. You can play Necro faster as well as put down necro and have responses up much better.
Outside of being a combo deck, the lower cost of necro may in fact be better. If I am just playing a grindy attrition deck all I care is to draw cards and when you look at things like Sun Titan / Yawgmoth's Will to recover these two cards I would often rather have Necropotence.
My argument is more that I dont really see as much difference between the two cards. In some cases I think Necropotence may even be better due to being cheaper to cast. It obviously depends on your deck to some extent but if you have the option of having either card in your opener you could just as easily drop Necro sooner and find tutors for the follow up turn to assemble and execute that combo that you would have later dug for with Yawgmoth's Bargain. Due to all of the tutors in the format as well as being a black card to start with honestly, I think its really over hyped the differences between the two cards.
I think you can take this as both why I think Yawgmoth's Bargain isn't as bad as its hyped to be as well as a comment that Necropotence is gross. I just dont see a lot of difference between the two to be honest.
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[Modern] Allies
Of the ones I mentioned... I think that Painter's Servant and Gifts Ungiven are probably the highest chance of being removed. This is not to say they will be, but as things stand I think they are the most likely candidates to be considered.
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[Modern] Allies