I mean it's the same packs for magic as a year ago saying add some 1.8 or 1.7 packs that are based around magic
I mean the same packs for magic have been the same no change in any magic 1year ago the same magic packs were just same -1 or 2 there really hasn't been a change or a challenge since regrowth
so 1.7.10 development cycle is waning, except here internally mymskies will have magic, 1.10 the elder statesmen of magic mods have all retired. This leaves us with using the old magic again, or finding one with the new 1.10 magics which are poorly balanced messes (broad brush painting detected).
A new Thaumcraft is in development, but it is going slow and Azanor has been on again and off again. Currently he does have an Alpha version, but it is locked behind his Patreon wall. That said, Wyndman is aiming in the right direction that the newer 1.10 magic mods have not hit the same popularity that the elder core has. Botania and Blood Magic are two of the three pillars most magic packs are built around, and without Thaumcraft, things are shaky for 1.10 modpacks. There are a few new magic mods, but as said above (in this post and Wyndman's) there are balance issues. Then there is the additional layer of complexity and potential complications that hosting a multiplayer server adds. That is what I have found at least, but I continue to research and look, since I too am a big fan of magic mods.
Quite a few of the new magic mods are also going to be coming to 1.12+ rather than 1.10, as the process of producing them tends to be long enough, with small but noticeable enough differences between recent versions, that for many of us it's not worth building for old versions like 1.10 then porting forward through things like the 1.11 itemstack changes and then the 1.12 recipe changes, when we can just build for 1.12 early on in development and reduce spaghettification.
there is a pack for 1.7.10 called Mage Quest. It is solely based n magic. I have not played it in over a year, but I do remember it being extremely fun for me. This is a magic pack, there is literally no tech in it.
One of my all time favorite magic packs was called magic world 2 but that pack is even older then mage quest so I am not holding out much hope for a server for it. I can also second mage quest being fun, needs more thaum addons though