After going through his trophies, he decided it was time to leave. Even if for no reason, just to be on the safe side. After all you shouldn't put all your eggs in one basket.
He could not put all his hopes into believing that no beast would dare to trespass the Winged Lizard's territory. Also after that fight he had a lot of blood on him.
This was from when he had slashed the spine of the Lizard. Blood had been spurting out like a fountain at that time so it was all but impossible to avoid.
'I remember that there was a lake not too far from here on the map.' He thought. After checking the map of the Fallen city on his students wristband, he confirmed its location and started walking away.
When he reached the edge of the roof he grinned. With a thought magic energy flowed out of his seal and surged through him. then a thin barrier appeared covered his body like a set of clothes glowing with a golden light.
Gravity Element Energy armor!