I don't think mist needs to be nerfed. Erebus needs it as it is today or he will be cannon fodder for example UB. Acctually I think you should refrain from nerfing as much as possible. And instead focus on buffing the weaker Demigods
I disagree. I think that misting off spits is fine, I also think that sitting in mist for 10 seconds to avoid a wave of burst damage is fine. What I don't think is fine is warping to a locked flag, casting stun to lock safely, getting interrupted, then misting until stun is back and repeating indeifnitely.
As a tool to avoid combat completely I think it should be changed. Another example is the most recent mist build in the strategy guide section right now, where EB spends more time out of combat invulnerable than in combat. The idea of running into someone's base with the intention to mist for literally 5-8 minutes straight is, to me at least, silly. Hilarious, but still pretty silly.
The only nerf I would want to see is a 10-15 second cap or a slightly upwards scaling mana cost with higher ranks, and that still wouldn't affect the endless locking strategy (I think that's more of a cataract problem than an EB problem, which isn't to say it won't work on prison, etc.).
Nerfing shield is nerfing a common, robust strategy that's a part of pretty much every game and is critical to oak's gameplay. I agree that the invulnerable locks are silly and I'd like to see them removed, but preventing new spits, snares, and interrupts mid-field so that a fragile player can actually escape is not something I want to see go.
However, nerfing the more extreme 30 seconds to 5 minute mist sessions is nerfing a niche and uncommon spec which seeks to avoid combat completely. At least shield is about getting into a fight, duking it out, and then escaping what would otherwise be your death. Mist is the opposite, it's sitting on a portal indefinitely because it's literally impossible to ever send you home. If they come and fight, you mist. If they stay, they generate zero exp while you farm the portal. Your mist kills the weaker waves an dthen the priests/monks/giants stand still and fight your nightwalkers and eventually fall to the mist as well. There's no solution there for a defender.
For an oak to chain lock a portal he's either gotta be able to kill you outright or make a complete rotation from crystal to portal flag every 45 seconds. He can teleport one way, but he's gotta walk the other. In extreme situations like when he gets the journeyman's treads it can be pretty much impossible to stop him, as he'll warp in and then run out with shield active, but before that point there is a combat solution to the situation.
I could go on and on about this, because for regulus to have enough helms to perma-mist he's gotta spend so much gold that Oak will probably have his boots, but then you guys want to nerf low rank shield but keep high rank shield intact, so your nerfs wouldn't impact the boots strategy anyway... as you can see it's easy to go in circles talking about it.
So I'll stop my rambling and just say that there are a few extreme, abusive uses of mist that I think should be removed. A 10-15 second cap on it would fix them. Also it's worth pointing out that at the heart of both of these issues is the fact that there's just no counter to locks and that locking portals ends games so easily.Dancing around the issue with ranom nerfs is probably the worst solution in the end, and it should be addressed directly.
Personally I don't think you should be able to lock out an enemy portal for 45 seconds, it's just too much. Neutral flags are fine in my book, as is locking your own portals, but personally I would enjoy this game more if you fight from the start of a game to the end, instead of avoiding combat completely 20 minutes in and doing portal locking runs... I think the cap lock nerf did very little to affect late game portal locking because by that point everyone has silence, mass charm, shield, deep freeze, boulder roll, etc. to protect the full cast anyway. However, I do realize that's just my preference and it's not going to change.