Sparksmith
Mana cost {1}{R}. Power/toughness 1/1.
{T}: This creature deals X damage to target creature and X damage to you, where X is the number of Goblins on the battlefield.

Sparksmith is a red card, legal in Premodern, shown in its old-frame Onslaught printing.
Price and printings: Cardmarket (€0.21) · TCGplayer ($0.2) · Scryfall
How often Sparksmith is played
Sparksmith is maindecked in 1 of 131 tournament decks in this archive (1%), averaging 1.0 copies.
Counting only the 66 decks that can cast red cards, 1 of them plays it (2%).
See how it compares on the Premodern staples list.
Tournament decks with Sparksmith
- Rakdos Goblins: 1st Place at Side Event - Czech Nationals (1× mainboard)