Xiluo let out a heavy breath.
The wide-area [Grease] had consumed an enormous amount of his mana.
Had Xiluo not been slacking off throughout the earlier fighting, he really would not have been able to handle such a massive expenditure.
Although [Grease] was essentially a first-tier spell.
The mana cost of spells like this was calculated by their area of effect.
Extending it to fifty or sixty meters in length had multiplied its cost many times over! Though it was not as outrageous as fifty or sixty times the cost, it was still at least twenty or thirty times as much!
Fortunately, the results were pretty good.
Combined with the heat produced by [Shock Spell], the two low-tier spells had instantly become a wide-area Wall of Fire!
Not only was it faster to cast than the real Wall of Fire, but it also covered a much wider area! It practically rivaled a third-tier area spell.
Combining different spells to produce new effects.
Turning low-tier spells into higher-tier spells.
Reducing consumption while shortening casting time!
That was also what made [Combined Spell] so powerful.
This was precisely what made spellcasters so powerful!
The other wyrmlings looked at the cavalry blocked by the wall of fire, admiration on every face.
Xiluo really was Xiluo. Even at a time like this, he could step up and stop the pursuing cavalry, buying time for all the wyrmlings to escape!
He was so powerful, so dependable!
The wyrmlings cheered.
Then they saw Xiluo swiftly run over to Allen, the Little White Dragon, pick him up, and put him on his back.
The little dragon looked extremely small and thin compared to Xiluo. Though just over four meters long, he was exceptionally scrawny, and lying on Xiluo's back did not hinder him much.
"Allen! Hold on