With that now Arvin had a weapon with him that he could use against those fools. That poison was deadly enough that them easily, if they enough of it. But the question was how should he use it? That egg was a very dangerous object. If Arvin takes it out of the vase, then the poison in the air will also be lethal for him. So throwing that egg, infront of Alman and the trio was not a plausible and not a safe idea.
To get poison resistance one has to inhale the trace qaunatity of the egg from time to time. And then they had to pray that their body would be able to handle the posion. Arvin had confidence that his body would be able to deal with the poison as Loki assured him that he would be able to. But this meant that Arvin cant use this egg in combat.
