Cipher Soldier

Level 3 EARTH/Machine Effect
1350 ATK / 1800 DEF

If this card battles a Warrior-Type monster, during damage calculation: This card gains 2000 ATK and DEF during that damage calculation only.

Rulings – Yugipedia

Printings:

Yu-Gi-Oh! The Falsebound Kingdom promotional cards: TFK-EN002 (Super Rare) - 2003-11-04
Yu-Gi-Oh! World Championship Tournament 2004 promotional cards: WC4-002 (Prismatic Secret Rare) - 2004-02-10
Champion Pack: Game Four: CP04-EN010 (Rare) - 2007-09-06
Machina Mayhem Structure Deck: SDMM-EN010 (Common) - 2010-02-19
Turbo Pack: Booster Six: TU06-EN013 (Common) - 2011-08-04
OTS Tournament Pack 3: OP03-EN016 (Common) - 2016-11-17

Prices:

Cardmarket: 2.32 €
TCGplayer: $ 2.56