Rathalos S Noir Corne banner

Rathalos S Noir Corne is a tricky unit. There's a lot going on with his kit that can sometimes make for cool highlights, and his DPS is reasonable enough to be usable, but he's ultimately held back by a pretty bad archetype that he doesn't particularly take advantage of. It makes for some relatively low Mastery grades, although both skills are worth some consideration. Supposing you raise him at all, his S2 should be your starting point. The Mastery gains on it are decent, particularly the SP improvements on a long Charge-based skill like this, but the main reason to focus on it first is that it's the better general use skill. It has pretty solid burst DPS and is far less situational than his S1. It's not amazing by any means though, particularly given its high SP cost for a skill of this type. His S1 may be something to consider as well, but as mentioned, is very situational to the point that it's more or less just a gimmick, and thus a luxury reserved for NoirChad maximalists. It tends to be the "Youtube clip" sort of skill. When the enemies line up so that he can chain trigger it, the results are really cool to see, but those situations are very rare and there isn't much value