Jay decided not to bring his bone helminth into the guild; If someone grabbed the bone amulet he wasn’t sure what would happen.
He had planned to take it right into the guild and analyse it now that it was level three; he was even going to have it in its natural form and let it cast spells alongside him at the target rocks.
But now that these strange black guards were here? He wasn’t dumb enough to take such a chance, and neither did he have absurdly good luck.
Worst case scenario: The helminth would automatically attack someone and reveal Jay as a necromancer - he would be executed on the spot.
This was slightly more likely with all the aggression that the mage hunters were showing him.
Best case scenario? He would be left alone and possibly copy the necrotic bolt spell from his helminth today.
Obviously he could just learn it another time.
The benefits came nowhere near enough to outweigh the risks.