In this case, since the source of divine power for "As Words Command" comes from Venerable Moon Rabbit, no matter how much power Venerable Moon Rabbit uses to resist, "As Words Command" can firmly restrain her.
Thus, Fang Ze can also take the opportunity to investigate Venerable Moon Rabbit.
However, the reason Fang Ze did not immediately resort to this plan was that the consumption was truly immense.
Though the Venerable claims to have infinite divine power, that's merely a façade caused by the abundance of their divine power reserves and rapid recovery.
Previously, when Fang Ze used this tactic on Venerable Yuan Gu, it had already reduced Venerable Yuan Gu's divine power reserves to a very low state. He doesn't want to exhaust Venerable Moon Rabbit as well.
After all, his goal in capturing the Venerables is for combat. If all the Venerables he detains are far from their peak strength, it would greatly diminish the effectiveness he aims to achieve.