They need to make Rage not usable on enemies.
Tbh, this hurts the enemies more than it hurts the player because enemies love to use Rage as a debuff tool so the mage deals a crap ton of damage, especially those Source spell type.
It's just that the concept is so broken (derp and cheap final multiplier steroid) that it's questionable why it exists. We also still need some kind of Taunt-related spell anyway for a warfare-tank type so Rage should be the candidate that gets reworked into that instead of the current super mega steroid for only 1 AP.
Rage is probably the worst 'nerfed' skill so far. I thought they redid a bit with the debuff part, but perhaps they put it back in? Rage being both a heavy buff and even a heavy debuff is far to much versatility. Perhaps it would be better if it were only a selfcast or at least only a friendlycast.
Warlord is also still to broken and needs a nerf. Giving enemies more armor made it less broken, but not much if play extremely on it.
Even if they remove the 100% resist, it really doesn't help that Rage is still the most broken steroid in the game followed by Elven Racial. Physical party don't really care about the 100% resist anyway and most of them will only use it as buff.
Warlord also needs to have a limit on how much it can generate per turn (like 2->1->0) instead of the current flat 2. Combined with AoE, it doesn't help that a 2 AP crit-pling Strike can generate 4 AP easily from killing 2 targets at once.