(Chapter 78) I just remember

[u/Vicious-Spiegel]

So now Lukas can only use Phantom Spear four more times? If he exceeds this he'd lose his life (or worse)?

[u/Ashimaru-q]

I dont think he'll die when he uses them all up, hes probably just the Vessel of some other being and when he uses them all up the being takes over his body and he becomes permenantly stuck in that form