Cosmic Train

Your patron is a train that traverses the Astral Sea, time and space, or different dimensions, a machine that serves as the primary form of transport for entities exploring the universe or just trying to go home.

As an employee of a cosmic train, you were hired by your patron to protect those that travel by train, ensure that all passengers have a valid ticket, provide sustinance and most of all, ensure that all passengers have an unforgettable journey.

You might have been hired specifically for your talents, to pay off a debt or you might have heard about the railway and applied for a job. Whatever reason for your employment, you now work for the astral railway and are required to use your powers responsibly.

Level 3: Cosmic Train Spells

The magic of your patron ensures you always have certain spells ready; when you reach a Warlock level specified in the Cosmic Train Spells table, you thereafter always have the listed spells prepared.

Warlock Level	Spells
3rd	Longstrider, Tenser's Floating Disk, Vortex Warp, Moonbeam
5th	Blink, Melf's Minute Meteors
7th	Freedom of Movement, Leomund's Secret Chest
9th	Cloudkill, Teleportation Circle

Level 3: Station Master's Equipment

At level 3, you are given some sort of tool that you as an employee of the Cosmic Train might use. This acts as an arcane focus. When you level up, you can change your arcane focus.

You can roll a d6 or decide from the following:

1. Pocket watch
2. Whistle
3. Hand bell
4. Ticket punch
5. Signal lamp
6. Railway safety flag

You also gain proficiency with tinkerer's tools.

Level 3: Galactic Tracks

You can cast Longstrider without expending a spell slot a number of times equal to your proficiency bonus, and you regain all expended uses when you finish a Long Rest. When you use this feature you are not required to hold concentration on the spell. Additionally you may use 10 feet of movement to teleport yourself to a point within 15 feet that you can see.

When you use this feature you may choose one of the following effects:

Cosmic Train Ticket: You use another 5 feet of movement to take another passenger with you to your designated location.

Astral Smoke Stack: When you use this feature, the smoke from the Cosmic Train has a chance to overwhelm nearby creatures, giving those within 5 feet of your starting point the frightened condition if they fail a DC10 + (your spell attack modifier) wisdom saving throw.

Level 6: All Aboard!

At level 6, you are able to summon one of the many carriages from the Cosmic Train, granting buffs to yourself and those within a 20ft radius lasting for one minute. You can use this feature a number of times equal to your proficiency modifer. 

Dining Car: Everyone in the dining car gains 1d6 temp health + your proficiency bonus.

Observation Car: Everyone in the observation car adds your proficiency bonus to their perception and insight checks.

Passenger Car: All attacks do an additional 1d6 fire damage.

The radius increases by 5ft at level 10 and level 14 and the dice for both the temp health and damage change to 1d8 at level 10 and 1d10 at level 14.

Level 10: Cosmic Train Conductor

At level 10, you now have an additional 10 feet of movement speed and resistance to cold damage.

Level 14: Stopping All Space Stations

At level 14, you are able to summon an astral image of the Cosmic Train, which rushes towards a target from where you are standing in a 10ft wide, 60ft straight line. Enemies in the way of the train must succeed a dexterity saving throw of DC 10 + your charisma modifier or take 3d10 radiant damage. On a successful save, the opponent take half that damage.

You can summon the train once per long rest at level 14, twice at level 17 and three times at level 20.

At level 17, the damage dice increases to 4d10 and 5d10 at level 20.