Tattoo of the Hammer

Description
This tattoo depicts the legendary Dwarven warhammer 'Whelm' in flight, emblazoned with the rune of Moradin on a background of crackling energy.

Smite
Once per long rest the player may use a bonus action to cast Branding Smite at Second Level. The radiant energy from the spell bursts from the hammer and flows through the bearer's limbs to strike the target.

Resistance
The bearer gains resistance to fire damage - this does not stack with other resistances to fire, unless otherwise stated.

Craftsmenship
The bearer of the tattoo has advantage on all creation rolls with blacksmith's tools.

Craft Obsession
The tattoo slowly creates a progressively strong desire within the bearer to forge their own weapons and equipment.

If the bearer encounters an object of superior craftsmanship, they must make a Wisdom save at DC 12 to resist the urge to drop what they're doing and inspect the construction of the item. This DC raises along with the rarity of some items - the rarer or more refined the construction, the harder the check.

Source
This tattoo was created by Fell, from Fell's Tattoo Parlour.