In most situations, when a pet beast chooses a stable evolutionary path and uses corresponding evolution skills and resources, as long as it doesn't have too many inherent defects, the success rate is quite high.
If additional evolution resources are added, the evolution might result in a stronger individual, but it is more likely that the evolution will fail, and what happens then will become completely unknown.
Like Lin Su did, adding six fourth-level resources and two fifth-level resources all at once is extremely rare.
Ordinary people really wouldn't dare to play like this.
Not to mention whether these evolution resources would cause conflicts, under normal circumstances, it's questionable whether a pet beast during its evolution could continue to absorb such a substantial amount of additional resources after absorbing its own evolution resources.
Therefore, Lin Su was completely unsure what the outcome of this evolution would be.
But he was not entirely gambling.