If Lann's concept can truly be realized, then it's equivalent to using the Extinct Dragon's thorn as material to complete his own [Tendon Coil].
Although, the Extinct Dragon's thorn isn't the most top-notch biological material Lann has seen.
For instance, the muscles of the Golden Lion in its golden fur state should have higher strength than the thorns considered expendable by the Extinct Dragon.
Not to mention that legendary 'strongest muscles in the world—the Golden Lion Heart'.
But the Extinct Dragon has its own advantages.
First off, it regenerates incredibly fast; as long as it's well-nourished, it can regrow within half a minute after breaking.
According to the Qilin, who was 'educated' by the Golden Lion twice, when the Golden Lion went to fight it for the second time, the wounds on its hands from the Qilin's horn hadn't healed yet.
They were just starting to scar.
The regeneration ability is far behind.
