1/Depends on the god, but remember: in the Realms, a sacrifice may be a musical instrument or craft object you've made. Not all sacrifices are creatures, and even if the sacrifice is blood or tears, it need not involve the death of the sacrifice. Loviatar loves blood of her…
— Ed Greenwood (@TheEdVerse) May 1, 2018
2/…faithful, obtained/gathered through painful means, but NOT fatal means (just for an example). A sacrifice to Milil is an original song, sung at an altar and then never performed again (by the offerer; priests may take it up). And so on.
— Ed Greenwood (@TheEdVerse) May 1, 2018
