WHAT

oh you know, just a casual armored blow...what 10? Against melee ranged units. Yeah, just yeah. That's a thing apparently

+20 Def.

They don't even care anymore. lol

Employee: Frick we have so many green armored units now. Hector dominates everything. We really should have thought about not making and other armors so busted.

Manager: Guys relax, we'll release a new colored dagger that's Red to deal with Hector and make sure she doubles him, procs Special on him, and has +20 Def against his attacks.

Employee: Why didn't I think of that! We'll program it in.

Remember that it only works against DC units.
A large part of the effect is a slightly worse version of Brave Lyn's B skill.

It's not going to destroy any meta.

If she has a Felicia-ish statline, which she probably will given iceberg and atk/res solo, all it seems to do is allow her not to die when she tries to initiate against DC units.