First off, lemme 'splain mahself. This is exactly what you think. A new weapon thread. So, Without further ado, lets start.
CRAFTING LINES:

Iron Hammer (3*) -> Dizzying Hammer (4*) -> Quake Hammer (5*)
This line does pure normal damage with a chance of causing stun.

Iron Hammer -> Shocking Hammer (4*) -> Thundering Hammer
This line does split normal elemental damage and has a chance of causing shock at 4 and 5*.

Speed:

Both lines have a 3 hit combo a are about as slow as the Fang of Vog. The Shocking and Thundering hammers are slightly faster.

Charge Attack:

The charge attack consists od your knight throwing the hammer 7 space forward. (maybe less I'm not sure) Once the hammer hits the ground it creates a small, Troika-like burst. The thundering has a bolt of ightning effect similar to the Spark of Life revive. The Quake Hammer line has a mid-speed charge time, (like i dunno, brandish line?) and slows you down equal to Movement Speed Decrease Medium. The Thundering Hammer line (4 and 5*) charges slightly quicker.

Recepies:

The Iron, Dizzying, and Quake Hammer recepies can be bought from Izola for the average price of recepies their star, The Shocking and Thundering Hammer recepies can oly be bought from Basil in the arcade at the average depth and price of recepies their star.

Descriptions:

Iron Hammer: A heavy, metallic hammer built from the same material as the Skylark.

Dizzying Hammer: A hammer so heavy it'll make your head spin, and probably your enemies' heads too.

Quake Hammer: This hammer is so heavy, even the aftershck created by the original quake is known to break seismographs.

Shocking Hammer: A slighty electrified hammer that usually gives the wielder a jolt as a hint of when to strike.

Thundering Hammer: An ancient, electrified hammer once wielded by a legedary hero, some even hailed him as a god.

So what do you think? Any feedback is appreciated, also did I totally screw up? Do they seem OP? Please tell me! Thanks!