The Rock Spirit

Level 4 EARTH/Rock Effect
1700 ATK / 1000 DEF

This card cannot be Normal Summoned or Set. This card can only be Special Summoned by removing from play 1 EARTH monster in your Graveyard. Increase the ATK of this monster by 300 points during your opponent's Battle Phase.

Rulings – Yugipedia

Printings:

Labyrinth of Nightmare: LON-069 (Common) - 2003-03-01
Labyrinth of Nightmare: LON-E069 (Common) - 2003-03-01
Labyrinth of Nightmare: LON-EN069 (Common) - 2003-03-01
Dark Beginning 2: DB2-EN007 (Common) - 2005-07-27
Speed Duel: Battle City Box: SBCB-EN029 (Common) - 2020-11-26
Speed Duel Tournament Pack 6: STP6-EN017 (Common) - 2023-09-06

Prices:

Cardmarket: 0.04 €
TCGplayer: $ 0.33