If you are in the belly of the worm, you are blinded and restrained. 

Round 3 

Post when able. 

Dex save vs bones 25

Str save vs chompchomp 19

Gaelan gasps in shock and relief, glad he wasn't swallowed by this monstrous thing. Nothing for it though, it needs to be put down. He tries to teach it a lesson, this meal ain't free.

Palm strike Attack: 19 Damage: 10

DC 12 CON save vs Poisoned Condition

Jump kick Attack: 17 Damage: 10

DC 12 CON save vs Poisoned Condition

Spin kick Attack: 24 Damage: 9

DC 12 CON save vs Poisoned Condition

Dex save: 20

Strength save: 10

Quote from ToweringInferno >>

Dex save: 14

Strength save: 25

 Modoc fails to dodge the debris but resists being sucked into the worm.  He retaliates with two more strikes.

Strike 1: Attack: 19 Damage: 11

Strike 2: Attack: 14 Damage: 17

"Have some more steel. You're not eating anything else you foul creature."

The giant, bony worm opens its maw and draws in air with such force, that even from where Eirikur stands, his hair is pulled forward in front of him. He feels a siren of alarm in his chest as Gaelen and Modoc are in melee with it and fighting against much greater gale forces, but it passes quickly as he watches his friends resist the vacuum. Gaelen crouches low against the pull and seems to get under the wind, while Modoc stands firm against it like an ancient oak tree. Then at once they renew their attacks.

Eirikur whispers a prayer of thanks to a god he no longer believes in and repeats his casting with a gesture and divine utterance. Necrotic energy flows through him and escapes from the esoteric holes in his soul, rising from his skin as sickly green light, looking very much like steam evaporating.

OOC: Wis Save of 14 or 9 necrotic damage.

Realizing that he had initially drawn the creature's attention, Eirikur will continue to walk laterally, away from the engine car and now, away from the passenger car toward the freight car. Since Modoc and Gaelen have its attention, he holds off on trying to draw the bony worm's attention again. Instead, waiting to see how it will behave now that its attempt to eat them has failed.

Quote from ToweringInferno >>

This post has potentially manipulated dice roll results.

Quote from ToweringInferno >>

Dex save: 14

Strength save: 25

 Modoc fails to dodge the debris but resists being sucked into the worm.  He retaliates with two more strikes.

Strike 1: Attack: 18 Damage: 17

Strike 2: Attack: 22 Damage: 13

"Have some more steel. You're not eating anything else you foul creature."

 Not sure why it rerolled, but I think the first was a 13 to hit, for 11 damage and the second was a dirty twenty for 10 damage.

Hylizatha flicks the cylinder of her revolver open, taking out the empty shells before reloading it. Once it is reloaded she takes a single shot at the worm, keeping back after seeing what it had done with Gaelen and Modoc.

Attack: 18 Damage: 17

(Sorry for the delay in responding.) 

Wis Save vs Toll the dead

6

Con Save vs poison

11

Bone Worm is poisoned. 

Modoc and Gaelen please roll Dex Save DC 17 vs Bony Body

On fail 

20 piercing damage 

Everyone can hear the rattle of a thousand bones as the bone worm ejects shards of bone everywhere in a 60ft radius around itself. 

Gaelen and Modoc please roll Dex again DC 17 

On fail take 34 piercing damage 

half damage on success

Round 4 

Post when able 

DEX save vs Bony 21

DEX save vs Shards 22

Wanting to try this:

Climb onto a Bigger Creature

If one creature wants to jump onto another creature, it can do so by grappling. A Small or Medium creature has little chance of making a successful grapple against a Huge or Gargantuan creature, however, unless magic has granted the grappler supernatural might.

As an alternative, a suitably large opponent can be treated as terrain for the purpose of jumping onto its back or clinging to a limb. After making any ability checks necessary to get into position and onto the larger creature, the smaller creature uses its action to make a Strength (Athletics) or Dexterity (Acrobatics) check contested by the target’s Dexterity (Acrobatics) check. If it wins the contest, the smaller creature successfully moves into the target creature’s space and clings to its body. While in the target’s space, the smaller creature moves with the target and has advantage on attack rolls against it.

The smaller creature can move around within the larger creature’s space, treating the space as difficult terrain. The larger creature’s ability to attack the smaller creature depends on the smaller creature’s location, and is left to your discretion. The larger creature can dislodge the smaller creature as an action—knocking it off, scraping it against a wall, or grabbing and throwing it—by making a Strength (Athletics) check contested by the smaller creature’s Strength (Athletics) or Dexterity (Acrobatics) check. The smaller creature chooses which ability to use.

"Let's see if I can wrangle this here beastie!"

Athletics check 24

OOC: Well poop, I guess not.

Dex save 1: 10

Dex save 2: 17

Quote from ToweringInferno >>

Dex save 1: 10

Dex save 2: 17

 Modoc takes the first hit and just saves against the second.  His rage protects him further against the bones.

He'll swing back at the creature.

Attack: 20 Damage: 15

Attack: 11 Damage: 10

Quote from ToweringInferno >>

Quote from ToweringInferno >>

Dex save 1: 10

Dex save 2: 17

 Modoc takes the first hit and just saves against the second.  His rage protects him further against the bones.

He'll swing back at the creature.

Attack: 26 Damage: 10

Attack: 9 Damage: 16

 Looks like one hit and one miss.

OOC: You should still have one attack left. You can try again or do the normal punchy thing.