Larian Studios Forums Divinity: Original Sin 2 - The Modding Dungeon Divinity - Original Sin 2 - Modding Guides How to add a skill by casting another one.

The way the Inner Demon skill adds other skills is by applying the INNER_DEMON status (you can have a look at it in the Status_CONSUME category in the stats editor). You can do the same: have your skill apply a status, and fill in the skills to add in the Skills column of that custom status.