HI. Did arcane and divine casters create spells that told them how much time was going by? A
fly spell or waterbreathing spell last a certain duration does the spell impart when time is expiring to user in some manner? Or is it guesstamation?Depends on the incantation (everyone who experiments with spells, as opposed to just copying and using them, tinkers).
Some expire without warning, some create a rising whistle in the caster's inner ear, and some begin to tint vision a warning rose-red near expiry.#Realmslore

— Ed Greenwood (@TheEdVerse) September 10, 2021