Archspell (30th level): Your comprehension of the ultimate arcane formula and of the spells that constitute it reaches a new threshold. Choose one daily spell that you know. You can now cast that spell as an encounter spell (rather than as a daily spell).
官方compendium没有任何限定"每日攻击威能"的语句,只说了one daily spell that you know就行
Page 173–174: In the second sentence of the
Archspell feature, replace “one daily spell” with “one
daily attack spell.” The former text allowed you to use
this feature to regain a utility power, when that is not