working on a fan-class for Heart: the City Beneath that is inspired by the Replikas from Signalis, particularly the LSTR model, and the themes of memories, artificiality, and the imperfection of copies that accompany them in that game. considering making a whole fan-supplement that focuses on adding more sci-fi-leaning concepts into your Heart game, because there's certainly room for it!
in the common motif of zenith abilities wherein you preserve a Landmark against the corruptions of the Heart
warning for death, sort-of-tragedy or sadness, and thematic similarities with Signalis that could be considered vague spoilers (so you best be careful) under the cut
Oblivion Archive This place will live on in your memory, distorted one last time but ultimately preserved. If you attain this ability while on a delve, an eerie, speechless mood slips over you, and the ability will activate next time you return to a Landmark - you cannot be killed before then, forces attempting to do so will find you slipping away like a forgotten memory. To activate the ability, travel near the center of your chosen Landmark. You will revolve a full turn, trancelike, your wide-open eyes taking everything in. Once you complete this ritual, the entire Landmark disappears into your memory. A new Landmark stands in its place, a desolate temple-like structure with your corpse frozen in nigh-permanent stasis at the center; the disappeared Landmark (and its inhabitants) still exists inside your frozen mind, a melancholy shadow of itself - effectively becoming a Fracture (accessible from but beyond the Heart).