(OOF!)

The snake keeps going for the Orog:
Bite: To hit 16 for 6dmg
Constrict: DC14 strength save or take 12 dmg and be grappled

Erix meanwhile sits on Clumulk who use a Brutal charge; so no Opporuntiy attacks, ending 30ft to the right attack the bottom right Orc next to Zoveldra:
To hit 19 for 7 dmg.

Erix himselfs uses his wand of web to cast Web (depending on how high the ceiling is the webs will collapse or not) on a 20ft cube above Zoveldra and Mome (so 3 orcs in it)
DC15 dex save or be restrained.

Nevermind thats a concentration spell.
Erix casts Thorn whip to get the bottom right Orc away from Zoveldra:
To hit 19 for 6 dmg and be pulled 10ft towards Erix (and Clumulk)

Deflect Attack against Orc 5 Axe 2, -19 damage

Deflect Attack against Orc 6 Axe 2, -17 damage

Zoveldra skillfully dodges and deflects the orcs' barrage of attacks before flowing into her own strikes.

Action: Unarmed Strike to hit 21, damage 13

Bonus Action: Flurry of Blows Push (DC 14 strength or pushed back 15 feet). Attack 1 to hit 20, damage 10. Attack 2 to hit 19, damage 10.

Mome quickly takes 16 damage then decides to engage with the orcs who harmed her. She cats Divine Favor (+2 damage) then uses her her trident against orc 4 (attack 9, damage 2+2)

Steeling his resolve after his less-than-epic Shatter and the charge of the orcs, Elero raises his crossbow and fires at the most-wounded orc.

Light crossbow attack: 13 to hit and 10 damage

Bonus action: the Protector Cannon pulses out 11 temp HP of protection to anyone who needs it.

DM, I noticed I have Heroic Inspiration.  Can I add that to my attack roll?  I think I miss otherwise, and don't want to waste that damage.

Mark will hide again and shoot at the big bad, this time trying to push him back.

Hide: 24

Attack w/adv: 21

Damage w/sneak: 15 + 9 = 24 

Push back 10ft

Zombie Con save for undead fortitude.

DC 15: 10

DC 10: 9

If both succeed it drops to 1 hit point instead of dying

LANDMOP will make ominous eye contact with the Orog while walking to the nearest orc and casting Chill Touch

Attack: modified 20 damage: 9 necrotic. That orc cannot regain hit points until the start of LANDMOP's next turn

The Snake's bite misses the Orog, while he tries to throw off the Constrict with a DC 14 STR Save: 9 . Erix pulls the Orc away from Zoveldra as she drops one Orc and lays into another, fists flying all around. Mome tries to fight as well, but struggles to use her trident effectively being surrounded. Elero's attack actually hits one of the Orcs fighting LANDMOP's undead Orc, and drops it (No need to reroll.). Mark's shot catches the Orog in the neck, killing him and the Orog flies from his saddle off the giant lizard. LANDMOP's touch hurts the Orc fighting them.

The Elite Orcs fight on, despite the loss of their captain, while the lizard continues to fight Erix' snake. 

Orc 1 Javelin 1 against Zoveldra Attack: 20 Damage: 8 Slashing

Orc 1 Javelin 2 against Zoveldra Attack: 20 Damage: 6 Slashing

Orc 2 Axe 1 against Zoveldra Attack: 13 Damage: 10 Slashing

Orc 2 Axe 2 against Zoveldra Attack: 8 Damage: 5 Slashing

Orc 3 Axe 1 against Mome Attack: 20 Damage: 7 Slashing

Orc 3 Axe 2 against Mome Attack: 14 Damage: 10 Slashing

Orc 4 Axe 1 against Mome Attack: 15 Damage: 9 Slashing

Orc 4 Axe 2 against Mome Attack: 23 Damage: 5 Slashing

Orc 5 Axe 1 against LANDMOP Attack: 13 Damage: 3 Slashing

Orc 5 Axe 2 against LANDMOP Attack: 17 Damage: 9 Slashing

Orc 6 Axe 1 against Clumulk Attack: 11 Damage: 6 Slashing

Orc 6 Axe 2 against Clumulk Attack: 11 Damage: 9 Slashing

Lizard Bite against Snake Attack: 11 Damage: 21 Piercing

Lizard Tail 1 against Snake Attack: 11 Damage: 13

Lizard Tail 2 against Snake Attack: 21 Damage: 10

You all are up. The Elite Orcs fight on, with one staying back peppering Zoveldra with Javelins. The Lizard still fights Erix' snake.

Deflect Attack on Orc 1 Javelin 1, -11 damage

Redirect Attack on Orc 1 Javelin 1: Orc 1 makes a DC 14 dex save or takes 11 piercing damage.

Zoveldra deflects one javelin and dodges the axe swings, managing to grab and fling the javelin back at the orc just before the second one hits her. Thanks to Elero's Bear Spirit the damage isn't enough to slow down her offense.

Action: Unarmed Strike on closest orc to hit 16, damage 8

Bonus Action: Unarmed Strike to hit 23, damage 7

The snake goes for the Lizard that is still attacking him, and tries to take it with him on his last 'legs':

Bite: to hit 19 for 12 dmg
Constrict: DC14 strength save or take 13 damage and be grappled.

Clumulk meanwhile tries to take out the Orc next to them
Ferocity: 0+5=5
Overwhelming attack: to hit 20 for 6+3=9 dmg

Erix than tries to take it out, or take one in front of Mome (the left one) if this one is already death:
To hit 11 for 2 dmg, and pull 5ft to have it next to Clumulk and Erix.

Mome takes another 12 hp in slashing damage. "To the seven hells, all of you!" she calls out, rather put out by being hit repeatedly and her incompetence with her trident. She casts Spiritual Guardians (level 3) to protect her. The spirits take the form of various sea monsters and drowned beings, reflecting her sea-going past. She excludes her companions from being affected by the spirits. (An affected creature's speed is halved in the area (within 15' of Mome), and when the creature enters the area for the first time on a turn or starts its turn there, it must make a Wisdom saving throw. On a failed save, the creature takes 3d8 radiant damage (if you are good or neutral) or 3d8 necrotic damage (if you are evil). On a successful save, the creature takes half as much damage.) 

Without missing a beat, Mark will move a little, hide, and take a shot at the giant lizard. 

Hide: 12

Attack w/adv: 8, 14 +10 = 24

Damage w/sneak: 13 + 7 = 20

LANDMOP will cast another Chill Touch on the same orc as before

Attack: 25 Damage: 8

Elero marvels at the martial skill of his new companions, as well as the old ones, then takes aim at the orc who appears closest to death with his crossbow.

Light crossbow attack: 10 to hit and 11 damage

Bonus action: the Protector Cannon pulses out 7 temp HP of shielding to any friendlies who need it.

Orc 1 DC 14 DEX Save against deflect missiles: 14 , and Zoveldra lands two blows against the closest Orc while Erix' snake bites the giant lizard and tries to Constrict it, DC 14 STR Save: 17 . Mome's Spirit Guardians appear all around her as Mark's bolt sails and hits the giant lizard in the side, the beast screams and it's frills flay out. At that same time, LANDMOP's chill touch strike the orc next to them, while Elero's bolt misses.

At the start of their turn, the Orcs around Mome all make WIS Saves, taking 20 Radiant damage on a fail:

Orc 2: 8

Orc 3: 19

Orc 4: 7

Orc 5: 3

The Orcs fighting Clumulk and Zoveldra both drop. The Orc not currently in melee with you looks around the room, at the dead Orog flailing from the saddle, and his decimated company. He turns around and sees the giant lizard behind him and screams in Orcish. He rushes to the lizard, pulls the dead Orog from the saddle, and guides the lizard to Disengage and heads toward the door. The lizard looks pretty rough, but still can escape. The rest of the Elite Orcs scream his fleeing Orc's success and fight on:

Orc 3 Axe 1 against Mome Attack: 24 Damage: 10 Slashing

Orc 3 Axe 2 against Mome Attack: 7 Damage: 9 Slashing

Orc 4 Axe 1 against Mome Attack: 8 Damage: 7 Slashing

Orc 4 Axe 2 against Mome Attack: 20 Damage: 8 Slashing

Orc 5 Axe 1 against LANDMOP Attack: 6 Damage: 5 Slashing

Orc 5 Axe 2 against LANDMOP Attack: 23 Damage: 4 Slashing

You all are up, one Orc flees to the east on the giant lizard, while the last three fight on.

Elero watches the orc flee atop the lizard.  He frowns, mutters, "There's no killing like overkilling," and casts Scorching Ray.  Two of the three rays target the orc, and the third target the lizard.

Orc Scorching Rays: 26 to hit and 6 damage on the first one, and 17 to hit and 6 damage on the second one.  He'll use Arcane Firearm to add 6 damage to one of the rolls that hits, if one hits.  The ray on the lizard is 19 to hit and 9 damage.

Bonus action: the Protector Cannon will give 5 temp HP to any friendlies who need it.

If LANDMOP has the opportunity, they will send a Ray of Sickness at the fleeing orc. Otherwise they'll chill touch the orc next to them again.

Ray of Sickness Attack: 27 Damage: 19

OR

Chill Touch Attack: 13 Damage: 10