He had converted only about 40 percent of his mana but that was the limit. After all his mana nodes were opened with illusion and dream mana.
It was impossible to fully covert all of his mana to another element. He opened his palm and a fireball appeared.
Unlike other mages he never had to chant, he knew every line and rune of the spell circle rendering the need for chanting null. He shot the fireball at the spider.
It exploded bathing the massive spider in flames. It screeched and lunged at him, his eyes turned gold and he looked directly into it eyes.
" Stop." His voice boomed like a drum. Viona used that opportunity to attack, she slashed her sword through the air.
A jet of flames flew out and hit the spider, the temperature in the cave increased. The others retreated to the tunnel as to not interfere or get caught in the attack of that maniac.
When the flames cleared it appeared unharmed. However he could already see the discomfort in it eyes.
