While they were discussing this matter, Felix was feeling like absolute crap. He wished that heat was strong enough to burn his nerves and release him from this fiery pain.
Unfortunately, the green liquid was constantly healing his skin, creating this wicked circle of recovery and agony!
Lady Sphinx didn't put him in that liquid just to torture him but to keep his flesh undamaged as much as possible.
That's because the inscriptions didn't really engrave themselves on his skin but inner flesh.
The writing outside was a mere projection of the real inscriptions.
'Three minutes remaining.' Lady Sphinx thought as she glanced at Felix's devilish appearance.
She didn't have a single ounce of doubt that Felix wouldn't handle the pain.
She watched him experience it way too often, she started to believe that he befriended it!
The only obstacle in this experiment was having the necessary body toughness to resist melting down completely.