Assertion: warlock's level | /r/CapableOf | stack with the warlock's level
Facets:
value: to determine his eldritch blast damage
type: PURPOSE
value: effectively
type: MANNER
Source sentences:
text: Levels of prestige classes that provide +1 level of spellcasting effectively stack with the warlock's level to determine his eldritch blast damage (treat his combined caster level as his warlock class level when looking at the advancement table to determine eldritch blast damage) and his eldritch blast caster level (half his total caster level from his warlock levels and his levels in the prestige class that grant him an increased spellcasting level).