Choosing Which Will Become Reality and Illusion

"!!!" The dragon instantly spun his body while releasing another breath. "You're annoying. If you are that fixated on Theo to the point you're stopping me, I'm going to kill you right here, right now!"

The dragon thought he had enough. This time, he was going to fight the World Tree for real.

The three dragon heads charged the magma again in their throat, ready to release it. 

The World Tree was confused because he hadn't done or seen anything. In other words, whatever the dragon experienced was completely an illusion.

Once again, the World Tree trembled, realizing the depth of Theo's plan. Theo turned out to be pitting them against each other this whole time. He knew the dragon's temper perfectly and used it to his advantage.

The World Tree wanted to stop him, but the dragon had released its magma breath again.

The World Tree used his branches to catch these magma balls. However, the magma breath was never the dragon's trump card.