DelireMan7
Member
I had to go searching because I had forgotten entirely, but I think it was Miracle Resonance.
It is not hidden any more than most of Dark Souls' mechanics. It is at least mentioned on the description of the ring you get get for joining the guild of Gwynevere. Regardless, the resonance is way too context sensitive and completely useless for an offline player.
Miracle resonance was not working for a long time in the original game. Then a patch fixed it. But yes it's not that useful (like a lot of stuff in the game) but add again the amazing online aspect to it.
Also a lot of mechanics of Dark Souls have the reputation to be mysterious but in fact several of them are "explained" (brief description but still) in the manual (Shame that they disappeared now...) like the Resonance ring (called Synergy), the whole humanity system and summoning, the kindling of fire that give estus to other player and even the extremely rare vagrants.
On topic and still on Dark Souls 1 : The Gravelord covenant. The fact that the dark phantoms appear only on NG+ make this covenant useless in NG. Nobody will touch you sign to invaded you since they have no incentive to do so. It's a shame because I love the concept of this covenant.