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D+D: TIL You can't cast spells acquired via Fey Touched/Shadow Touched as rituals; they are not considered "spells known" even though you can (up)cast them with slots. So I think I'm back to Dissonant Whispers for the L1 spell pick with Fey Touched.
Got up-to-speed on GURPS history. In 1975 Howard Thompson of Austin TX launched Metagaming Concepts. In '77 they started a line of cheap-to-produce, quick-to-learn tabletop games under the "Microgames" imprint. MG #3 (1977) was designer Steve Jackson's "Melee" and #6, "Wizard". As D+D took off, Metagaming tasked Jackson with expanding on those two and fleshing out the TTRPG known as "The Fantasy Trip" (TFT). Advanced Melee, Advanced Wizard, and "In the Labyrinth" followed in 1980.
Evidently Thompson and Jackson clashed, with the latter leaving in 1980 to found SJ Games. He continued the "pocket game" concept with titles like "Car Wars" (1980). In 1983 Thompson folded his Metagaming company and the Microgames line went out of print. Some sources say Thompson intended to return to the industry by producing computer games, but that didn't happen and little is known of his post-Metagaming life.
By 1984, SJ was developing material that would result in 1986's release of GURPS 1E. Jackson offered to acquire the rights to TFT for $250K but Thompson declined, presumably hoping to build computer games on that IP. Meanwhile SJ carried TFT's basic character-profile concepts into GURPS, launching the "Basic Set" in 1986.