After 2 days, all the potions he used had been replenished. Abel put the 'Akara tent' back to his personal storage back and used the druid's soul to unleash 5 spirit wolves from the skill tree.
Abel saw that both intermediate Druids were riding on giant mount wolves. Through speculation, the wolves were dire wolves. Their defense and attack were both better than spirit wolves, and they were common summon beasts for intermediate wizards.
However, in practicality, a spirit wolf should be even better than a dire wolf. Those things were mounts, so how good their defense or attack was shouldn't matter. They only needed one thing, speed.
Spirit wolves were the fastest beings. They naturally knew how to move in a flash, and due to their half immaterial bodies, they could almost move in a flash for an unlimited amount of time.
If you really think about it, these things were actually perfect as a mount, so why didn't Druids ride them?