"Summoning The Three Celestial Kings"
The queen awakened the Judgment Ability, which was why she didn't use her holy energy aside from activating the entire race's racial advantages, such as the war machine or the shared damage.
The queen's Judgment Domain naturally didn't have a celestial ancestor.
It should only be able to replicate the scene of a judgment day with meteors, pillars of light and other inanimate things to punish enemies.
However, the moment the Queen opened the passage of time and invited the ancestors to her domain, things changed.
She constantly needed to use her holy energy, just like when the ten female elders with the Valkyrie's bloodline summoned the Valkyries.
The queen also used her hidden bloodline to be able to summon the ancestors, but now that she wanted to summon the great ones...
She was afraid that she would die even before she could summon one of the seven great ones.