Vade Arcanum

From the publisher: Vade Arcanum provides mechanical scaffolding to support role-playing when a player decides that their PC wants to develop a new spell in game. It was initially developed and playtested during 2020, and released on my patreon in early 2021. This edition includes a sample playthrough, a dozen new spells, a new magic-item, and two new monsters (all stats are for OSRIC.)