code/modules/antagonists/heretic/knowledge/side_knowledge/tier_two.dm

Tier 2 knowledge: Defensive tools and curses
/datum/heretic_knowledge/codex_morbus	Codex Morbus, an upgrade to the base codex Functionally an upgraded version of the codex, but it also has the ability to cast curses by right clicking at a rune. Requires you to have the blood of your victim in your off-hand