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I really like the Sunblade from the 1e Unearthed Arcana. It was a bastard sword, but handled like a short sword. It also had a few other cool magical effects.

In my current D&DN playtest, I'm running a home-converted Red Hand of Doom. The dwarf fighter happened to roll a bit more lukewarm for ability scores when compared to the rest of the PCs. So I replaced the sword found in Amery Vraath's skeletal hand with this (sort of a cross between the hammer of thunderbots ad a dwarven thrower):

Grubthar’s Hammer
This ancient warhammer was crafted by the fabled Dwarven Forge–Master, Grubthar Ironfist, to help aid in quelling the giantkind threat during the Fellstone Wars of more than 400 years ago. This ornate weapon weighs a hefty 15 pounds due to the rare, dense metals and alloys used in its creation.

Property:  You gain a +1 bonus to attack and damage rolls made with this weapon. It can be hurled as a thrown weapon, with a range or 20/80 feet, then returns to its owner’s hand.

Property:  The warhammer thrums with a faint vibration whenever it is within 100 feet of a giant, hinting at the weapon’s history, as well as its greater purpose and power.

Requirement:  You must be a dwarf to become attuned to this weapon.

Properties (Attuned):  The bonus to attack and damage rolls increases to +3. In addition, the wielder has access to the following additional properties:

• Giant Slayer:  This weapon deals 2d6 extra damage to giants. It also scores critical hits against them with a natural d20 roll of 18-20.
• Thunderburst:  When hurled, a critical hit from this weapon unleashes a loud thunder clap. Any non-dwarf within 20 feet of the target must make a DC 15 Constitution saving throw. On a failed saving throw the creature is deafened for 1d6x10 minutes. Giants failing their saving throw also suffer 3d6 thunder damage. On a successful saving throw they take only half the damage and are not deafened.
• Vengeful Smite (3 charges/day): Expend 1 charge to reroll any one damage die resulting from a hit with this weapon. Expend 3 charges to change a normal hit from this weapon into a critical. Each time you suffer a critical hit while wielding this weapon, gain 1 charge (charges in excess of 3 are lost after any rest).

Rarity:  Legendary.

History (Lore skill check)

DC 13: Forged by the legendary mountain dwarf, Grubthar Ironfist, in 1023 CY (over 400 years ago) and used to helped turn the tide against his hated foes, the giants, during the Fellstone Wars. The fabled smithy hailed from the once-proud Hammerfist Holds of the Wyvernwatch Mountains.

DC 16: Grubthar was said to have died completing it, his finest masterpiece. The forces harnessed in its creation proved too much for even him. Some even say his spirit still resides within the weapon.

DC 19: The warhammer was gifted from an unnamed dwarf trade ally to Amery Vraath in 1259 CY, in honor of his (short lived) victory over the Twistusk forest giants. But it has since been forgotten to the ages.

DC 22: For over 200 years the warhammer has been hidden away in a secret vault beneath Vraath Keep, still clutched in the skeletal remains of Amery Vraath, to whom it was gifted.