Lumiel as a master of all Elements threw away everything. Betting in the battle he didn't know he could get out alive or not. All he wanted was to kill the bastard who killed his students.
With just the Elements only his weapon, etched in his body. Summoning them like it was only breathing and can do as he wished with it. It was none other than the Element control that Lumiel practised when he was learning the basics.
Not something that Lumiel was lame at but something that he hides. Hesitant to use them freely and only used them when he has run out of mana. Equivalent to the last-ditch effort or last option. Likewise, it will be devastating.
Dashing to the enemy who was aware of his current situation, shocked as he broke free of the prison. Not something he sees every day and was impressed.