During the summoning period, a Summoner had to provide enough magic support for the summoned beast to continue staying in the world. Once the supply line of magic was cut, the phantom beast would immediately return to the magic passage and back to their world.
The power of phantom beasts relied entirely on the Summoner's strength. They would only be strong if the Summoner was strong.
Shen Yanxiao had once heard from Yun Qi that a long time ago, a powerful Sage Summoner summoned a huge Lord of Lava from another world. The Lord of Lava was ten times larger than eight mythical beasts combined, and could flatten a city with one foot. That Sage Summoner swept across the entire Brilliance Continent with that handsome lord and did not encounter a single worthy opponent. It was not until his magic was exhausted that the terrifying behemoth returned to the other world.
One foot to flatten a city…
Just the thought of it made Shen Yanxiao excited!