Rules glossary
↑ Parent rule: 107.16 The text box of a Class card contains class level bars, each…
107.16a “[Cost]: Level N — [Abilities]” means “[Cost]: This Class’s level becomes N. Activate only if this Class is level N-1 and only as a sorcery” and “As long as this Class is level N or greater, it has [abilities].”
No sub-rules.