Very special, very powerful weapons. All of these weapons have bases at the Hall of Heroes, their 3* and 4* recipes are only available through Basil, while the 5* form is only available through the Sanctuary Alchemy Machine.
Shadowflame Annihilator.
-Cutter-style weapon that has a slight chance of inflicting curse on every attack, including the ghost slashes. The 5* form require's a Maiden's Tear. The high slashes deal mixed shadow/normal damage, while the ghost slashes do pure shadow.
Great Regal Impaler.
-A Troika-style sword that has thorns and barbles all along it's side. The charge attack has very high flinch rate, but very low knockback. Instead of a pillar of light erupting after the smash, Lichen-like spikes erupt with a slightly wider AoE than Sudaruska/Triglav. The damage is split normal/piercing. Crafting requires a Celestial Ore.
Vicious Thorn Cannon.
-A blaster-style gun that shoots out huge stakes instead of energy bullets. Each bullet has a fair chance of causing strong poison, but the charge has a good chance. The damage is pure piercing. Crafting it requires a Nightmare Mane.
EMP generator.
-A DBB-style bomb that can be made from the blast bomb line of bombs. The damage is pure elemental with a Very High bonus against Constructs.. Crafting requires Gremlonium.
The Cutter sounds a bit OP, why not let the player get an Almirian spear (flourish style attacks) with Elemental and freeze.
I don't think the Impaler shouldn't have a better AOE but everything else sounds good... are you going to give it a status or have it deal more damage?
The thorn cannon sounds like an Obsidian Carbine that turned into a blaster.
The EMP sounds like a good bomb but why not just take off that construct perk and give it more raw damage?