Kyran remained indifferent after seeing Millie create two different arrays.
The crowd, on the other hand, were left speechless.
It was not a surprise that most felt awed at witnessing Millie's move.
Creating a single array took a lot of mental strain on the mage. One wrong formula would cause the array to collapse and backfire on its creator. When that happened, the mage would either be fatally wounded or even crippled for life.
For this reason, Array Specialists never attempt to create two arrays simultaneously.
Aside from this, it was the same reason that another array could not be created inside an already active array. The new array would disrupt the magic energy flow of the already active array, and the whole formation would collapse. When that happened, the magic energy in both arrays would get rebounded, and the creators of the arrays would receive the brunt of it, resulting in either a fatal wound or even death.