Big Shield Gardna

Level 4 EARTH/Warrior Effect Monster
100 ATK / 2600 DEF

When a Spell Card is activated that targets this face-down card (and no other cards) (Quick Effect): Change this card to face-up Defense Position, and if you do, negate the activation. If this card is attacked, change it to Attack Position at the end of the Damage Step.

Rulings – Yugipedia

Printings:

Dark Beginning 1: DB1-EN097 (Ultra Rare) - 2004-10-12
Tournament Pack 5: TP5-EN002 (Super Rare) - 2004-11-01
Champion Pack: Game One: CP01-EN006 (Rare) - 2006-11-11
Duelist Pack: Yugi: DPYG-EN009 (Common) - 2009-07-07
Duelist League 2010 participation cards: DL09-EN004 (Rare) - 2009-08-15
Battle Pack: Epic Dawn: BP01-EN176 (Common) - 2012-05-24
Battle Pack: Epic Dawn: BP01-EN176 (Starfoil Rare) - 2012-05-24
Legendary Collection 3: Yugi's World Mega Pack: LCYW-EN032 (Secret Rare) - 2012-09-29
Battle Pack 2: War of the Giants: BP02-EN032 (Common) - 2013-06-28
Battle Pack 2: War of the Giants: BP02-EN032 (Mosaic Rare) - 2013-06-28
Yugi's Legendary Decks: YGLD-ENB14 (Common) - 2015-11-12
Legendary Decks II: LDK2-ENY16 (Common) - 2016-10-06
Legendary Dragon Decks: LEDD-ENA12 (Common) - 2017-10-05

Prices:

Cardmarket: 0.10 €
TCGplayer: $ 0.13