Ghost Gardna

Level 4 DARK/Warrior Effect Monster
0 ATK / 1900 DEF

When a face-up monster you control is selected as an attack target, you can change the target to this card. When this card is destroyed and sent to the Graveyard, 1 face-up monster your opponent controls loses 1000 ATK, until the End Phase.

Rulings – Yugipedia

Printings:

The Duelist Genesis: TDGS-EN004 (Common) - 2008-09-02
Duelist Pack: Yusei: DP08-EN006 (Common) - 2009-02-24
Duel Terminal - Preview Wave 2: DTP1-EN022 (Duel Terminal Normal Parallel Rare) - 2009-06-20
Duel Terminal 1: DT01-EN052 (Duel Terminal Normal Parallel Rare) - 2010-01-29

Prices:

Cardmarket: 0.12 €
TCGplayer: $ 0.12