First and Foremost I would prioritize getting Energize and Grace. You don't *need* them because we have a lot of options these days for sustaining ourselves in missions, but they're still really, really, really, really nice to have. Barrier is good as well but I don't hold it in the same regard as Energize or Grace.
After you get those you have a lot of options for a lot of really good arcanes, and odds are unless you're used to grinding you're gonna burn yourself out trying to get them all so I'm just gonna list the ones I think are great to have.
If you like melee, Arcane Strike and Fury are two no brainers. Atlas, Excalibur, Baruuk, etc. all benefit from Fury extremely well, and Baruuk especially getting great use out of Arcane Strike.
If you like using your weapons a lot, Arcane Avenger is very good because it gives you flat 45% crit chance. So, say your primary 60% crit chance, it now has 105% after Avenger procs. On most of my weapons platforms frames I'm running Avenger. Arcane Acceleration is also very good but also niche to use because you're typically running it for specific weapons or builds. The same goes for arcane velocity, which happens to be amazing on Mesa for her regulators. Your dps will *skyrocket* with it.
As far as survivability goes, even if it's inconsistent, Arcane Aegis is a nice arcane to have if you're not trying to think about how you're surviving in missions. One of my go to builds rn for the new operation is Banshee because of silence, but she's pretty frail unless you're shield gating so I slapped Aegis on her with redirection, and most of the time I'm perfectly fine. Arcane Guardian gives you a nice armor cushion that I don't particularly use too often, but it's definitely worth picking up for ease of use and the amount of armor it gives if you like your health tanking frames. Arcane victory is also alright survivability wise, but I personally just don't like using it.
Arcane Agility is pretty niche too imo, but I like it for when I have a specific build in mind to speedrun a mission with a frame that doesn't have too much ability on their own. For example, I like running exterminate fissures with Harrow / Thermal Sunder and arcane agility helps with that (albeit there being wayyyyy better loadouts for exterminate fissures, I just like Harrow's convenience). Arcane trickery is another niche use arcane, and it's not immedietly convincing to pick up, but in circumstances where it is absolutely amazing, such as using it on Ash with Bladestorm, it's awesome. Definitely pick it up if you like Ash at all and want to try that build out.
The rest of the arcanes you can pick aren't amazing except for a few niche cases where you'll get good value out of them, but that's completely up to you if you're willing farm for them if you have anything specific in mind. That should about cover the main ones though. Happy grinding tenno
Grace has long been powercrept out of relevance, I can't think of a single Frame that wants to use it except MAYBE Inaros, Health Tanking is not exactly a good strategy, and 6% Max HP/s is not overly great, especially because most health Tanking builds use other healing sources like Gloom to be viable in the first place.
My personal picks would be
1. Energize (generally good on basically everything),
2. Avenger (neat for Health Tanks and required for Combat Discipline Builds),
3. Arcane Guardian (because that is the Arcane most Health Tank builds ACTUALLY use).
Then, after that
1. Nullifier for Eidolon and other Magnetic Sources
2. Arcane Velocity for Mesa and Gun Titania
3. Arachne, because it's good
4. Aegis, because it's good
Honestly, the rest is kinda Eh, and you can get it in any order you like
\^ditto to pretty much everything this comment said. Very good advice for OP.
Some other niche arcanes to consider are Nullifier. Useful for Eidolons and when you're annoyed at getting mag procced by Thraxes. Arachne also has some niche uses, boosting the damage of Styanax's 4 comes to mind.
Holy moly I can't believe I forgot Arachne. Extremely underrated arcane that I refuse to take off of my Protea. It functions identically to a 150% eclipse, and all you gotta do is hug a wall for .01 seconds. Definitely grab it if you're interested OP
Energize, Nullifier, Battery, and Secondary Fortifier are what I went with. Nullifier has been so helpful on Zariman and Deimos and Fortifier’s overguard is great for any frames who don’t get it naturally.
Melee Afflictions is a very cheap arcane that you can also get while farming the legendary arcanes (since it needs the vestigial motes instead of volatile motes). Slap it on harmony, equip reaping spiral, and watch it do big funny numbers.
Can also get Arcane Ice storm if you like playing frost.
Arcane energize
First and Foremost I would prioritize getting Energize and Grace. You don't *need* them because we have a lot of options these days for sustaining ourselves in missions, but they're still really, really, really, really nice to have. Barrier is good as well but I don't hold it in the same regard as Energize or Grace. After you get those you have a lot of options for a lot of really good arcanes, and odds are unless you're used to grinding you're gonna burn yourself out trying to get them all so I'm just gonna list the ones I think are great to have. If you like melee, Arcane Strike and Fury are two no brainers. Atlas, Excalibur, Baruuk, etc. all benefit from Fury extremely well, and Baruuk especially getting great use out of Arcane Strike. If you like using your weapons a lot, Arcane Avenger is very good because it gives you flat 45% crit chance. So, say your primary 60% crit chance, it now has 105% after Avenger procs. On most of my weapons platforms frames I'm running Avenger. Arcane Acceleration is also very good but also niche to use because you're typically running it for specific weapons or builds. The same goes for arcane velocity, which happens to be amazing on Mesa for her regulators. Your dps will *skyrocket* with it. As far as survivability goes, even if it's inconsistent, Arcane Aegis is a nice arcane to have if you're not trying to think about how you're surviving in missions. One of my go to builds rn for the new operation is Banshee because of silence, but she's pretty frail unless you're shield gating so I slapped Aegis on her with redirection, and most of the time I'm perfectly fine. Arcane Guardian gives you a nice armor cushion that I don't particularly use too often, but it's definitely worth picking up for ease of use and the amount of armor it gives if you like your health tanking frames. Arcane victory is also alright survivability wise, but I personally just don't like using it. Arcane Agility is pretty niche too imo, but I like it for when I have a specific build in mind to speedrun a mission with a frame that doesn't have too much ability on their own. For example, I like running exterminate fissures with Harrow / Thermal Sunder and arcane agility helps with that (albeit there being wayyyyy better loadouts for exterminate fissures, I just like Harrow's convenience). Arcane trickery is another niche use arcane, and it's not immedietly convincing to pick up, but in circumstances where it is absolutely amazing, such as using it on Ash with Bladestorm, it's awesome. Definitely pick it up if you like Ash at all and want to try that build out. The rest of the arcanes you can pick aren't amazing except for a few niche cases where you'll get good value out of them, but that's completely up to you if you're willing farm for them if you have anything specific in mind. That should about cover the main ones though. Happy grinding tenno
Grace has long been powercrept out of relevance, I can't think of a single Frame that wants to use it except MAYBE Inaros, Health Tanking is not exactly a good strategy, and 6% Max HP/s is not overly great, especially because most health Tanking builds use other healing sources like Gloom to be viable in the first place. My personal picks would be 1. Energize (generally good on basically everything), 2. Avenger (neat for Health Tanks and required for Combat Discipline Builds), 3. Arcane Guardian (because that is the Arcane most Health Tank builds ACTUALLY use). Then, after that 1. Nullifier for Eidolon and other Magnetic Sources 2. Arcane Velocity for Mesa and Gun Titania 3. Arachne, because it's good 4. Aegis, because it's good Honestly, the rest is kinda Eh, and you can get it in any order you like
\^ditto to pretty much everything this comment said. Very good advice for OP. Some other niche arcanes to consider are Nullifier. Useful for Eidolons and when you're annoyed at getting mag procced by Thraxes. Arachne also has some niche uses, boosting the damage of Styanax's 4 comes to mind.
Holy moly I can't believe I forgot Arachne. Extremely underrated arcane that I refuse to take off of my Protea. It functions identically to a 150% eclipse, and all you gotta do is hug a wall for .01 seconds. Definitely grab it if you're interested OP
Energize, fury, strike, avenger, nullifier
I like arcane guardian as a slot filler. It’s a decent enough buff without me needing to fulfill any requirements.
Energize, Nullifier, Battery, and Secondary Fortifier are what I went with. Nullifier has been so helpful on Zariman and Deimos and Fortifier’s overguard is great for any frames who don’t get it naturally.
Melee Afflictions is a very cheap arcane that you can also get while farming the legendary arcanes (since it needs the vestigial motes instead of volatile motes). Slap it on harmony, equip reaping spiral, and watch it do big funny numbers. Can also get Arcane Ice storm if you like playing frost.