When it achieves the "command" effect, there is indeed a consumption of Spiritual Power.
At first, it wasn't noticeable, simply because the consumption was minimal.
But now, with Lin Li controlling over fifty zombies at the same time, this consumption could be felt by Lin Li.
However, fifty-plus is far from the limit.
The current consumption is only at a "perceptible" level, still mild for Lin Li, not really an issue.
In fact, Lin Li judged that it shouldn't be difficult for him to control hundreds of zombies simultaneously now. If he breaks the "Proof of Telepathy" to temporarily enhance his Divine Sense, it's estimated that he could command at least a thousand at once.
Although there's a limit, it's still slightly disappointing.
Because Lin Li discovered that the sound transmitted through mediums could also achieve the ability's effect.
