"A great item" Simon was in awe.
The [Giant Crystal] was one of the key items that his dungeon needed and was something that would make it even stronger.
His mind raced, if he could harvest more of this crystal and incorporate that into the Breeding Pen that Coleus created, he would be able to create giant mutated beasts that were not only able to use elemental powers but were twice the size of normal.
Thus making them more fiercer and stronger.
With the recent invasion, Simon was made aware that no matter how many or what kind of beasts he spawned to guard his floors, they were all tantamount to ants in front of pure might.
They weren't able to create any waves against the three kings. In the future, there would be more opponents or even stronger knocking on his door, at that time, he would need stronger monsters and guardians to defend his dungeon.