Fist of Genesis

The Fist of Genesis is a magical hammer within the Core Anvil, presumably created by Moradin during The Founding. Vox Machina used the Fist of Genesis to forge Prime Trammels so that they banish Vecna from Exandria. The Fist of Genesis can be transformed between a light hammer, a warhammer, and a maul as an action. It also casts Thunderwave at 5th level and deals additional thunder damage.

Description
The Fist of Genesis is a massive hammer made of black metal with gold inlay. It is beautiful, well-made, and impressive-looking and has black and gold scrolling all across its surfaces. It is chained to a platform within the Core Anvil.

It has +3 to its attack rolls, and it deals an additional 2d6 thunder damage. The wielder can use an action to cast Thunderwave at 5th level once per short or long rest. The hammer's can also be changed between a light hammer, a warhammer, and a maul as an action.

History
Moradin created the Core Anvil within Scaldseat during The Founding; as the Fist of Genesis was found chained to the Core Anvil and is the only hammer in the anvil, it was presumably also created by Moradin during The Founding alongside it. If it was indeed created alongside the anvil, the Fist of Genesis was possibly involved in the creation of the dwarven people during The Founding and of the Prime Trammels during The Calamity, both forged by Moradin on the anvil.

Vox Machina sought the Core Anvil in 812 PD to forge three Prime Trammels to banish Vecna from Exandria. They arrived to find the Fist of Genesis held by a stone golem in its maul form. The golem dropped the hammer as they approached, causing it to dangle from its chain above the lava. They later retrieved it. Grog Strongjaw used it to shatter the beads of divinity they received from three gods so that the pieces could be infused into the newly forged blank rods, hammered also using the Fist of Genesis. Percival de Rolo then attuned to the Fist of Genesis and changed it to a light hammer the size of a ball-peen hammer so that he could chisel the required engravings onto the trammels.

Trivia

 * The Fist of Genesis is unnamed in Campaign 1, and it was not used beyond its magical blacksmithing capabilities. Its name and properties are known through Matt's Magic Items Template. It was added to the document by August 11, 2017.