Tsumi (Fallen Aasimar Echo Knight) summons her two echos. She then makes 4 attacks with her antimatter rifle while her echos make a total of 8 attacks with a flame tongue Greatsword. All aiming for Szass.

to hit 28 Damage 29 necrotic
to hit 18 Damage 30 necrotic
to hit 23 Damage 27 necrotic
to hit 30 Damage 35 necrotic
to hit 25 Damage 16 magical slashing and 3 fire
to hit 16 Damage 9 magical slashing and 5 fire
to hit 22 Damage 10 magical slashing and 8 fire
to hit 31 Damage 15 magical slashing and 9 fire
to hit 23 Damage 13 magical slashing and 3 fire
to hit 15 Damage 13 magical slashing and 3 fire
to hit 21 Damage 13 magical slashing and 11 fire
to hit 26 Damage 13 magical slashing and 11 fire

The echoes miss because they cannot reach me! All other attacks hit!

Quote from EfryElf >>

The echoes miss because they cannot reach me! All other attacks hit!

 Oh. So the Echos move closer to the other.

Darkforge stabs Thrasher 4 times, make a flame tongue shortsword attack, then make 4 more dagger attacks with action surge

The daggers are red wizard blades

Attack: 25 Damage: 25 necrotic + 9 Damage

Attack: 14 Damage: 18 necrotic + 6 Damage

Attack: 21 Damage: 32 necrotic + 8 Damage

Attack: 20 Damage: 23 necrotic + 9 slashing Damage

Attack: 13 Damage: 23 necrotic + 7 slashing Damage

Attack: 25 Damage: 30 nec srotic + 9 slashing Damage

Attack: 14 Damage: 8 necrotic + 7 slashing Damage

Attack: 20 Damage: 26 necrotic + 7 slashing Damage

 Attack: 12 Damage: 7 fire +10

On the first one, add 30+4 damage

Szass Tam uses Tasha's otherworldly guise and transforms into an angel. He then flies us and quicken spells eldrich blast, directing the first two to hit Tsumi, then have the next two hit the echoes, he flies up 20 feet.

Attack roll 

Bolt targeting Tsumi

18

Damage: 7

Bolt Targeting Tsumi

Damage: 15

24

Bolt Targeting echo 1

Damage: 10

28

Bolt Targeting echo 2

Damage: 6

25

Sorry it took so long to post, I had baseball practice.

Since I'm firing them one at a time, if you use your reaction to put your echo in front of one of my bolts, I will just instead target Tsumi with the bolt meant for it if it gets destroyed.

Thrasher, It is your turn

After losing her echos, Tsumi regains 18 temporary hit points. She then fires 3 shots at Szass and 2 at Darkforge.

to hit Szass 18 Damage 39 Necrotic
to hit Szass 24 Damage 30 Necrotic
to hit Szass 25 Damage 33 Necrotic
to hit DarkForge 17 Damage 41 Necrotic
to hit Darkforge 33 Damage 32 Necrotic

She then walks 30 feet closer to DarkForge and uses Necrotic shroud. DC 19 Charisma save.

Quote from Markell_Thrasher_704 >>

Quote from Markell_Thrasher_704 >>

This post has potentially manipulated dice roll results.

m'kay, I use my action to use intimidating presence, but first i use my bonus action to do a frenzy attack

first:

Hit roll: 23

Damage roll: 19

then:

Wisdom saving throw from the darkforge guy

 why th does it say that?

 Did you make any edits to that post? If not, it’s just a glitch.

Quote from DrakenBrine >>

After losing her echos, Tsumi regains 28 temporary hit points. She then fires 3 shots at Szass and 2 at Darkforge.

to hit Szass 19 Damage 31 Necrotic
to hit Szass 26 Damage 37 Necrotic
to hit Szass 20 Damage 28 Necrotic
to hit DarkForge 20 Damage 44 Necrotic
to hit Darkforge 24 Damage 29 Necrotic

She then walks 30 feet closer to DarkForge and uses Necrotic shroud. DC 19 Charisma save.

 Since the first two killed Szass, can I make the third hit DarkForge instead?

No, look at tasha's otherworldly guise

I make a saving throw

13

22

Ok, Darkforge walks away from the barbarian, making sure to not see her. He then walks up to Tsumi and uses action surge and second wind

Darkforge regains 24

Darkforge's attack rolls

24: Damage: 21 necrotic + 8 slashing

23: Damage: 12 necrotic + 6 slashing

28: Damage: 21 necrotic + 7 slashing

19: Damage: 25 necrotic + 7 slashing

19: Damage: 23 necrotic + 7 slashing

25: Damage: 18 necrotic + 7 slashing

25: Damage: 22 necrotic + 6 slashing

24: Damage: 25 necrotic + 8 slashing