Time sensitivity
From Tardis Wiki, the free Doctor Who reference
Time sensitives are individuals or species that are sensitive to the ebb and flow of time. Tharils were one such species and were highly prized by humans as they could navigate the time lines. Dwarf star alloy is the only substance that can hold time sensitives like Tharils. (DW: Warriors' Gate)
Time sensitives could also manifest amongst human populations. (BNA: Walking to Babylon, EDA: Camera Obscura)
