Search every book on the shelf.
Try "fireball", "grung", or "DC 15".
Necromancy Cantrip
Choose a creature within range that has 0 Hit Points and isn't dead. The creature becomes Stable.
The range doubles when you reach levels 5 (30 feet), 11 (60 feet), and 17 (120 feet).
Player's Handbook (2024), p. 318