Once the little robot had left, Mia entered her player name, which was also the nickname she had on Spartia which was 'The Goddess of Lightning', and she began to click on the summoning spell category, which indeed existed.
And to their delight, there were two summoning spells available, one that Cassy and Mia could both use, and the other that Roman could use.
The first one would allow them to summon Avenger Trees and they only needed the energy of earth and light to summon them.
And since both Cassy and Mia had evolved their white and green flames that was why they could both summon them.
This spell allowed them to summon 2 Avenger Trees at a time and it was specified that they were very resistant, and therefore difficult to kill, and that in addition they could attack with their roots and that if they captured a prey, they could drain them of their mana and HP points and then either use them on themselves or send them to their summoner.