Poquelin doesn't bat an eye as the party attacks. Ug's magic axe smashes into the back of his head, but for some reason it is the barbarian who is sent reeling. He pays the goliath no further heed. When Alalla strikes, the devil catches the blade in his palms and steals its flame. He shoves Alalla away easily and holds the fire openly in his palms. It doesn't seem to burn him at all. The crimson light that the fire reflects in his eyes seems magnified a hundredfold, however.
One of Vincent's arrows grazes his cheek, leaving a cut of steaming blood. The wound closes a moment later, leaving not even a scar.
Poquelin opens his mouth, but then listens intently as Zenithral speaks.
"I speak not of deals, but of salvation." He gestures to the confused militia, to the ruined gates, and to the army beyond.
"Your petty squabbles on this plane pale beside the true threat to everything in existence. Look upon your leader!" He points to Alalla.
"You see the taint in her eyes, and hear it in her snarl, yes? She has seen the truth! And it has driven her mad."
Poquelin steps up to Alalla, then. From the heavy crunch of ice under his sandals, the party is reminded again that the devil is much heavier than he appears in his human form.
"Tell them what you saw, Alalla. Tell them the truth of the Abyss and its spawn, the demons who would rend this world and see it nothing but a smoking crater!"
Poquelin casts Suggestion on Alalla.[ +- ] Suggestion
You suggest a course of activity (limited to a sentence or two) and magically influence a creature you can see within range that can hear and understand you. Creatures that can't be charmed are immune to this effect. The suggestion must be worded in such a manner as to make the course of action sound reasonable. Asking the creature to stab itself, throw itself onto a spear, immolate itself, or do some other obviously harmful act ends the spell.
The target must make a Wisdom saving throw. On a failed save, it pursues the course of action you described to the best of its ability. The suggested course of action can continue for the entire duration. If the suggested activity can be completed in a shorter time, the spell ends when the subject finishes what it was asked to do.
You can also specify conditions that will trigger a special activity during the duration. For example, you might suggest that a knight give her warhorse to the first beggar she meets. If the condition isn't met before the spell expires, the activity isn't preformed.
If you or any of your companions damage the target, the spell ends.
As Alalla answers, Poquelin's form begins to writhe as his spell of transmutation fades.