RangerWickett
Legend
Personally, I think it would be cool if any wizard could learn the generic "Acid Arrow", and upgraded versions like "Melf's Acid Arrow" were available for research or to find in treasure.
I love this idea. It could be as easy as listing the spell entry, then having a note at the end:
Dweomer of Note -- Melf's Acid Arrow
Crafted by one of Mordenkainen's allies, a mage who humorously called himself Melf the Elf, this version of the classic acid arrow can be split to strike two or three enemies, doing one-half or one-third as much damage to each (rounded down). Scrolls with this dweomer are commonly offered as payment to adventurers who aid the Circle of Eight.