Resonator

The explosive force of an alchemist’s bomb isn’t just fire—it is a wave that can be shaped and focused. Alchemists who realize this and pursue the science of waves are deemed resonators for their oft-revisited subject, resonant frequencies. Perhaps such frequencies are at the center of all alchemical pursuits, for with the right frequencies, a resonator can warp explosions, flashbang dragons, and vibrate steel to pieces.

Playback Device

Starting when you choose this field of study at 2nd level, you construct a clockwork device for recording and playing back audio. You can record anything you have heard within the last minute using this device and can store up to 8 hours of audio. Audio played back sounds identical to when it was recorded, but you can’t use this device to replicate sounds loudly enough to deafen or deal damage. Additionally, you can playback audio up to three times as loud, allowing you to use the device as a megaphone. If your playback device is lost or stolen, you can build a new one for 100 gp over the course of a long rest.

Forumula

FORMULA: CONICAL BOMB
Starting at 2nd level, you can attach a waveguide to the exterior of your bomb, changing it into a conical bomb. Instead of exploding in a radius, a conical bomb’s blast radius extends in a 15-foot cone from the point of impact, facing in a direction you choose. A conical bomb deals thunder damage instead of fire damage, its damage dice are d6s, and it requires a Constitution saving throw, instead of a Dexterity saving throw.

Resonant Frequency

By 6th level, you have discovered that every material has a resonant frequency, a specific tone that compromises its structural integrity. As an action, you can choose one type of solid material, such as wood, glass, metal, or stone, and begin playing the material’s
resonant frequency through your playback device. While playing the resonant frequency, objects made of the specified material within 15 feet of you that aren’t being worn or carried take force damage equal 1d8 + your Intelligence modifier at the start of each of your turns. Constructs or elementals made predominantly of a single material, such as metal or stone, and components of objects, such as the metal lock of a door, can also be damaged by a resonant frequency. You can stop playing a resonant frequency on your turn (no action required)

Improved Flashbang

Starting at 10th level, your Flashbang feature improves in the following ways:

• Your flashbangs affect creatures within 10 feet of you.
• You can choose creatures within this area to be unaffected when you throw a flashbang.
• Your flashbangs affect creatures of Huge size.

Reverb Bomb

FORMULA: REVERB BOMB
At 18th level, you can add materials to shift your bomb’s resonant frequency, changing it into a reverb bomb. A reverb bomb deals thunder damage instead of fire damage, its damage dice are d8s, and it requires a Constitution saving throw, instead of a Dexterity saving throw. After hitting a target with a reverb bomb, the bomb explodes again in the same blast radius again with diminished force at the beginning of your turn on the two following rounds. Each time the bomb explodes, creatures in the blast radius must succeed on a saving throw or take half of the bomb’s damage, as normal. At the start of your next turn, the bomb’s damage dice are d6s. At the start of your following that one, the bomb’s damage dice are d4s. This effect ends early if you use a reverb bomb again.