Lyod knew it would take considerable energy to summon a single no-face member from the token space, let alone summon two people at once. After going through obstacles after obstacles starting from the beast world, underworld, and the two feasibility trials to seize the position of the Luna queen candidate from Letti, Aria realized she could survive summoning four people at once in an infinite amount of time.
It was a very good thing for her that Aria was able to summon Regine and the assassin to carry out the mission from Lyod.
The assassin watched Alpha Harland's movements while Regine cast a spell on Letti's body to prevent her from turning into a werewolf.
Lyod's threats to the girl were real but not entirely true. As Alpha Harland had guessed, no magic could completely eradicate a person's basic mastery.