fn register_core_rune(
built: &mut BuiltCombatSystem,
data: &ResolvedGameData,
unleashed_fire: bool,
) -> Result<ImpactProcFn, EngineError>fn register_core_rune(
built: &mut BuiltCombatSystem,
data: &ResolvedGameData,
unleashed_fire: bool,
) -> Result<ImpactProcFn, EngineError>