The Light Fantastic by Terry Pratchett

In this whimsical fantasy novel, the bumbling wizard Rincewind finds himself caught up in a cosmic adventure alongside the naive tourist Twoflower and his sentient Luggage. As the Discworld faces an impending collision with a red star, Rincewind must navigate a series of humorous and perilous encounters, including trolls, druids, and the formidable sorceress, the Lady. With the fate of the world hanging in the balance, Rincewind's reluctant heroism and the power of the Great A'Tuin, the giant turtle carrying the Discworld, play a crucial role in averting disaster and restoring balance to their eccentric universe. The 7604th greatest book of all time