Screechirk looks over as one of the guards nicks Leif. "I'd stay away from that woman if I were you." he says to the prince.

Holding up his holy symbol and lets out a radiant burst.

Action: Radiance of the Dawn
30ft radius centered on self, harms hostile creatures only

Damage: 8+3+5 = 16 radiant damage
CON Save DC 14 for half

If the guards still stand, he'll stay where he is. Otherwise he'll fly up and over to the woman. 

Will use Warding Flare reaction (imposes disadvantage on a melee attack against him) if there's another attack made on him.

(Guards, Screechirk, Leif, Woman, Prince of Vice)

Screechirk lets out a radiant blast centered on himself. The first guard is defeated by the blast, but the second still stands for a moment.

Then four tiny arrows fly down at the woman, cutting into her bare skin. The woman falls unconcious from the poision from the arrows. However, not before she cries out,

"Biza, avenge me!"

Above the fallen woman, a ghostly apparation appears above her.

The Prince of Vice stares in shock at the sight before him.

The biza swoops down to attack Screechirk and as it does it cries, "Amos Nir, I damn you."

(Attack: 19 Damage: 22 necrotic damage. DC 14 Con save or hit point maximum is reduced by the damage taken.)

(Guards, Screechirk, Leif, Woman, Prince of Vice, Biza)

[[ Since it swooped down, was that a melee attack? Would use a warding flare reaction to impose disadvantage if it was. ]]

(Yeah, it's a melee attack. If disadvantage: 11 to hit)

[[ Currently Leif's turn, right? ]]

Leif runs at the Biza with ferocity reaching out a finger to touch the monster with bestow curse.

• While cursed, the target must make a Wisdom saving throw DC 13 at the start of each of its turns. If it fails, it wastes its action that turn doing nothing.

Maddening hex adds 2 psychic damage also.

”Stop what your doing writhe in anguish foul thing!”

(Guards, Screechirk, Leif, Woman, Prince of Vice,Biza)

The Prince of Vice regains his composure and attempts to run off away from the chaos.

(Wis Save: 12)

 The biza just floats in the air.

[[ I'm guessing we're back to Scree and Leif acting? ]]

Screechirk holds up his shield with the holy symbol of Milel and begins chanting a fiery invocation. Rising into being is a ball of flame that rams into the Biza.

Action: Flaming Sphere 2nd level
Bonus Action: Ram it into the biza!

Damage: 1+3 = 4 fire
DEX DC 14 for half

Flaming Sphere rounds: 1/10

Leif concentrates on the biza’s curse with maddening hex again as well. (2/10 rounds)

save or do nothing.  Take 2 psychic damage.

”Burn and go mad wisp!”

(Guards, Screechirk, Leif, Woman, Prince of Vice, Biza)
(Dex save: 21
Wis save: 3)

The biza manages to avoid most of the flaming sphere but falls victim of the curse once more.

The Prince of Vice continues running away. The guard charges after him.

Screechirk swoops through the air, manipulating the sphere as he goes and loosing firey rays after the fleeing guard.

Bonus Action: Move flaming sphere and ram it into the biza once more
Damage: 3+2 = 5 fire
DEX Save DC 14 for half
Rounds: 2/10

Action: Scorching Ray, sending the rays at the guard

Ray 1
To-Hit: 9+6 = 15
Damage: 2+1 = 3 fire

Ray 2 
To-Hit: 10+6 = 16
Damage: 3+2 = 5 fire

Ray 3
To-Hit: 3+6 = 9
Damage: 5+5 = 10 fire

(Guards, Screechirk, Leif, Woman, Prince of Vice, Biza)

(Dex: 21)

The biza dodges out of the way and misses most of the damage caused by the flaming sphere.

The guard is struck by the first scorching rays and falls down in the road.

Concentration on the curse.  +2 psychic damage.  Mentally command Glass to shoot at the Biza.  

Shortbow. Ranged Weapon Attack: +6 to hit, range 40/160 ft., one target. Hit: 1 piercing damage, and the target must succeed on a DC 10 Constitution saving throw or become poisoned for 1 minute. If its saving throw result is 5 or lower, the poisoned target falls unconscious for the same duration, or until it takes damage or another creature takes an action to shake it awake.
16

 (Guards, Screechirk, Leif, Woman, Prince of Vice, Biza)

Glass fires an arrow at the biza striking it but seemingly go through the creature.

(Con save: 17)

The Prince of Vice has now disappeared out of view behind a building.

(Wis save: 11)

The biza shakes itself before looking around. It then swoops down to attack Leif crying out, "I curse the name of Nargis Ruba. That blasted orc!"

(Attack: 8 Damage: 21 necrotic damage. DC14 Con save or hit point maximum is reduced by damage.)

"Yikes." mutters Screechirk. "Get better!" he says to the fallen gnome, swooping to Leif's side.

Turning the biza he says, "In the name of all that is good and holy is this world, go back to the shadows!"

Bonus Action: Healing Word on Leif
Healing: 3+3 = 6

Action: Sacred Flame
Damage: 2+7 = 9 radiant
DEX Save DC 14

Will using Warding Flare if the biza makes a melee attack against him.

Leif is currently prone having fallen unconscious, dropped to zero then healed 6 but max hp reduced by 38 so 6/7hp.  (Unless it was a save vs magic then he is 6/45hp.  Big hit.)  Either way Leif stays prone his body jerks rigidly bony points at his brow and joints protrude noticeably as an impossibly deep voice echoes out from his open gaping mouth his hand grips bloody rags from a casualty earlier today as he calls forth demons
right behind the Biza.

roll was a 1, so 2 demons of CR1 appear.  
2 maw demons

(The DC 14 con save is on a melee weapon attack.)
(Maw demons init: 6)

(Screechirk, Leif,  Biza, Demons)
(Biza's dex save: 6)

The biza is caught off guard and feels the full force of the sacred flame.

Then it swoops down to attack Screechirk crying out "Kit Mata, I condemn you."

(Attack: 8 Damage: 27 necrotic damage. DC14 Con save or hit point max is reduced by damage.)

The two maw demons manifest, and seeing the biza they attempt to attack it.

(Attack: 24 Damage: Unable to parse dice roll. piercing damage.
Attack: 5 Damage: 11 piercing damage.)

The first maw demon misses but the second one succeeds.