I... I know I've seen that three legged crow symbol before... but it's been so long I can'...

Same! I've been following this since the beginning without rereading so I've forgotten so many details. I do remember that symbol though

Yess around chapter 73 where he had to go to the crows grave helping moojin out there he got this new skill

Just letting you know, the 3 legged crow symbol from this webtoon has been spread all over the Internet by the fans of this series. You can find it on multiple websites. You can download various versions of it. And there are even places you can buy trinkets with that symbol. As far as I can tell, these are fan made.

Wow really? That's so cool!!

Also, iirc, Tomb Raider King also uses a three legged crow

Well, the three legged crow is an actual name in Asia that’s been around for hundreds, maybe thousands, of years. In China it’s called Sānzúwū (三足烏), in Korea it’s called Samjok-o (삼족오), and in Japan it’s called Yatagarasu (八咫烏). In all three cultures, it represents the sun.

Meanwhile, this series claims that three legged crow comes from ancient Norse or Celtic religion somehow but that’s impossible. Celtic myth features the goddess The Morrígan appearing as a crow, often in groups of three, but not with three legs, while Norse myth involves Odin's two ravens, Huginn and Muninn, who are not three-legged.

I actually think the author is confused.

I want to specify that when I said “the three legged crow symbol from this series”, I was specifically referring to the version of that symbol that appears within “this” series. There are countless three legged crow symbols across Asia, because it’s part of the East Asian culture that’s been around for centuries.