With the interference of elemental spirits, Angus could only use fire elemental or any other elementals that Axel couldn't summon during the battle.
Angus found that Axel could only summon a few elemental spirits at specific times. Since the contract between the spirits is very sacred, he didn't know the details. But, he could summarize that Axel could at least summon one or two elemental spirits a day.
If he is fortunate, he could summon up to five spirits. However, there are also days when he couldn't call any of his spirits even those with close relationships. In summary, Axel's ability has a very high and very low limit.
Knowing this, Angus gives him extra close-combat training to cover this unexpected weakness. This time, Angus leaves Axel with Ilgor, the orc warrior. Ilgor may not be the strongest warrior Angus knows. However, Ilgor is one of the sturdy and strong warriors he knows.