Now Lex was not looking forward to seeing how powerful his most powerful attack was at all! Anyone who thought that was seriously misunderstanding Lex's motives during this critical juncture. Just because he could perfectly hide all traces of his activities, supplement his strength with his system and make sure the repercussions were manageable, did not mean he was using this opportunity to act cool! Not at all!
The Tyrants Mask Lex put on had a few powerful effects, besides just generating a small amount of divine energy based on how widespread the legend of the Invincible Tyrant was. It also granted him anonymity which was hard to see through - though in the situation where he had put the mask in front of people, it could obviously not hide his identity.
The second ability it had gained, after growing through absorbing divine energy, was to entirely suppress Lex's aura. While Lex himself could also suppress his aura, the complete suppression of the mask was quite incredible.
