In the process of choosing a spell, Rowling also seemed a little hesitant, not knowing what kind of spell to cast.

Rowling knew that if the spell she cast didn't do enough damage to the magical assassin, he would use teleportation again to close the distance, and she wouldn't be able to get the spatial calibration.

Most of the spells that Rowling has mastered so far are low-level ordinary spells, a few of which belong to the third order of magic, and the only kind of fourth-order magic is the gate of time and space.

The spells that Rowling was able to cast were very similar to the spells that Rhodes mastered, the only difference was that Rowling could not master the most special spell of the Titan's Arrow, but other than that, there was not much difference.

Because of this, Rowling was very hesitant to choose a spell.

In Rowling's opinion, for a magical assassin, the effect of the area spell was very small, and it could only cause a small amount of damage to it, and it was obviously a long way from hitting him hard.

In addition to the area spells, Rowling's mastery of single damage spells is of a low rank, and the one that can deal the most damage is only the second-order Thunderbolt Ice. Due to the lower tier of the spell, the damage will also be insufficient.

While Rowling hesitated, the magical assassin didn't give Rowling too much time to think, and was ready to use teleportation to escape.

In this case, Rowling couldn't continue to think about it, but just cast a second-order thunderbolt ice, wanting to deal as much damage as possible to the magical assassins in the air.

As if sensing the thoughts in her heart, as Rowling cast this spell, Rowling suddenly realized that she seemed to be able to affect the form of the spell of Thunderbolt Ice. At the same time, in Rowling's mind, there was a unique way of casting this spell.

At this time, according to these extra consciousnesses in her heart, when casting the Thunderbolt Ice, Rowling made corresponding changes to this spell.

When this thunderbolt ice took shape and shot towards the location where the magic assassin was about to appear, Rowling's mana also decreased significantly, and the mana required to form this thunderbolt ice far exceeded the normal thunderbolt ice.

Just before heading to the Ice Blue Spell Academy, Rowling had already restored her depleted mana to its full value. In this process, Rowling did not spend too much time meditating, but used the artifact parts owned by Rhodes to speed up the recovery of mana.

After recovering her mana, Rowling returned this special artifact part to Rod.

But at this time, Rowling suddenly found that after she cast the Thunderbolt Ice, the original full mana instantly dropped to about half. Rowling knew that the abnormal consumption of mana was inseparable from the changes she made when she cast Thunderbolt Ice.

When she first cast Thunderbolt Ice, Rowling didn't understand what this change in spell meant, but she soon realized it from the injuries on the magical assassin's body.

When Rowling hit the Magic Assassin, the Ice Arrow did not explode like a regular Ice Arrow, but directly pierced the Magic Assassin's body, leaving a large blood hole in his body. After suffering such severe injuries, the Magic Assassin was no longer able to use teleportation, and had to fall from the sky.

This discovery made Rowling deeply aware of the power that this change to the spell could give to the spell.

It's just that when Rowling cast the Thunderbolt Ice, the methods of changing the spell in her mind disappeared completely, and even Rowling herself couldn't recall how she changed the way the Thunderbolt Ice was cast.

Recalling that in the previous battle with Reese, she was also able to change the spells in the magic scroll, and at this time, Rowling had vaguely discovered some abnormalities in herself.

It's just that Rowling knows that the current situation is not suitable for her to think about these situations carefully.

Looking at the magical assassin who was falling from the sky, Rowling immediately took action. Teleporting, Rowling immediately appeared next to the magical assassin and reached out to grab the spatial calibration that was falling with the magical assassin.

After obtaining the spatial calibration, Rowling ignored the magical assassin beside her, and without even glancing in his direction, she once again performed teleportation and returned to the ground.

Due to the particularity of the spatial calibration, it will have a certain rejection with the spatial ring worn by the mage, and because of this, Rowling cannot put it into the spatial ring, but can only hold it in her hand.

Just as Rowling used Thunderbolt Ice to attack the magical assassin and obtain the spatial calibration, the other thieves around her also saw this scene.

The target of all the thieves in the field is undoubtedly the space calibration in Rowling's hands. When it was captured by Rowling, the surrounding thieves took action and rushed towards Rowling's location.

This group of thieves didn't care who had obtained this spatial calibration, and the only thing that existed in their eyes was this spatial calibration.

For these thieves around her, Rowling has no fear in her heart. Once Rowling has achieved the spatial calibration, she will be able to quickly evacuate from this position by teleporting, even if these assassins are strong in melee combat, they will also be helpless in the face of teleportation spells.

In this process, perhaps the only thing Rowling has to worry about is the magical assassins who exist among these ordinary assassins. Rowling knew that once her teleportation trajectory was seen through by these magical assassins, she might end up in the same fate as the previous assassin.

When Rowling has this attention, she will not easily reveal her trajectory in the process of teleporting. However, according to Rowling's observation of these magical assassins, none of these magical assassins may be able to see through the trajectory of teleportation.

Just as Rowling was about to teleport, she suddenly received an extremely unusual perception from the spatial calibration.

Along with this perception was a feeling that Rowling was extremely familiar. The appearance of perception undoubtedly made Rowling overjoyed.

Upon discovering this, Rowling immediately took control of the spatial calibration, establishing a special connection with the perceived sensation that appeared.

At this time, under the guidance of spatial calibration, a dark green portal quickly unfolded, and the size of this portal was far beyond that of ordinary portals.

In this open portal, the figures of Rhodes and the ghost dragon are slowly emerging.