The Goblin Demolitionist is a chaotic and unpredictable subclass for the Fighter class, focused on using explosives and firearms to wreak havoc on the battlefield. Goblin Demolitionists are known for their love of explosions and loud noises, and their willingness to take risks in order to achieve their goals. They are often seen as reckless and unpredictable, but they are also highly skilled and dangerous combatants.

Level 3: Unstable Elemental Armaments

You gain proficiency in firearms (pistols) and improvised explosive devices (grenades). Your pistols are considered martial weapons for you.

Goblin Elemental Grenades: During a short rest, you can craft a number of unstable grenades equal to your Dexterity modifier (minimum of 1). When crafting, you can choose the elemental damage type: fire, cold, lightning, or acid. These grenades have a 1d6 chance of malfunctioning when thrown.

Malfunction Table (Roll 1d6):

1: Misfire! The grenade explodes in your hand, dealing its chosen elemental damage to you instead.

2: Dud! The grenade fails to explode. It lands harmlessly.

3: Normal Function.

4: Extra Boom! The grenade explodes with increased force. The damage dice are increased to 3d6.

5: Shrapnel! The grenade explodes, and small bits of metal are flung outward. All creatures within 15 feet of the explosion must make a DC 10 Dexterity saving throw or take 1d4 piercing damage.

6: Sensory Overload! The elemental energy of the grenade violently disperses, creating a disorienting blast centered on yourself. All creatures within 15 feet of you, including yourself, must make a Constitution saving throw (DC 10 + your Dexterity modifier + your proficiency bonus). On a failure, they are blinded and deafened until the start of your next turn.

When thrown, a grenade deals 2d6 damage of the chosen element in a 10-foot radius. Creatures within this radius must make a Dexterity saving throw (DC 8 + your Dexterity modifier + your proficiency bonus) or take full damage, or half damage on a successful save.

Pistol Combat: When you use your action to attack with a pistol, you can add your Dexterity modifier to the damage roll.

Level 7: Rapid Fire & Reload

When you use your action to attack with a pistol, you can make an additional pistol attack as a bonus action.

When you use a bonus action to reload a pistol, roll a d20. On a 10 or higher, the reload is successful. On a 9 or lower, the pistol jams. You must use your next action to clear the jam.

When you clear a jammed pistol, your next pistol attack has advantage.

Level 10 Chaotic Creation

• Goblin Tinkering: You gain the ability to craft special grenades and explosive traps. You can spend 1 hour crafting one of the following:
  • Chained Grenades: Two grenades connected by a short Chain. You can target one creature with the two grenades. That creature must make a Dexterity saving throw (DC 8 + your Dexterity modifier + your proficiency bonus). On a failure, they are restrained by the chains and their speed is reduced to 0 until the use an action.
  • Timed Explosive: A grenade with a short fuse that explodes after a set amount of time (determined by you).
  • Tripwire Trap: A simple trap triggered by a tripwire, releasing a single grenade.
  • DM's Choice: With the DM's approval, you can create other types of grenades or explosive traps, using your goblin ingenuity and available materials. The DM determines the effects and crafting time.

Level 15: Grenade Barrage

 

You can throw two grenades as an action, targeting two different points within range. Roll a 1d6 for each grenade separately to determine if they malfunction. The grenades can be of different elemental types.

Level 18: Explosive Elemental Expertise

Once per long rest, you can unleash "Total Elemental Demolition." As an action, you throw a number of grenades equal to your Dexterity modifier at a single point. All grenades in this attack have advantage on their attack rolls and saving throw DC for your and allies. You can choose a single elemental type for all grenades thrown during this ability even if what carrying isn't that chosen type. BECAUSE MAGIC!

Also, for the next minute, your Rapid Fire & Reload feature succeeds on a 5 or higher.