[Touc]

Since Cotillion is being coy about what Muscle Armor does, I'll explain.

Muscle Armor is an aura for unarmed/armed users that gives good stats (don't remember the specifics), with its main draw being its Q ability.
It is a temporary CC immunity to everything. Can't be rooted, stunned, blinded... Not even knockback works, so moves like javelins and dragging beams won't stop them.
The only way to properly avoid a melee user with Muscle Armor's Q ability up is either by using speed boosts or by turning on invulnerability. Otherwise? They are going to go in, and they'll hit hard.

It is a strong ability in an aura that makes it worthy as a hidden ability. Can literally turn battles around and make certain match ups turn into the armed/unarmed fighter's favor.

Assuming the wiki isn't lying, it gives +30 power and +10 vit. That's worse (in my opinion) than the public Holy aura, which gives +5% DR and +30 power, and way worse stat-wise than a lot of other auras such as Assassin's Shroud, the crystal/cosmic auras, and Chronos.

The saving grace is the active, which is definitely strong from what you've described. But, in this meta of extreme bursts (not to mention the prevalence of slows, knockbacks, and so on), you're at most going to be able to use it twice per fight.

Given the above and the fact that just about everyone has an invuln or speedboost now, is it really that oppressive?