Mid Shield Gardna

Level 4 EARTH/Warrior Effect
100 ATK / 1800 DEF

Once per turn, you can flip this card into face-down Defense Position. Negate the activation of any Spell Card that targets this 1 face-down monster. At that time, flip this card into face-up Defense Position.

Rulings – Yugipedia

Printings:

The Lost Millennium: TLM-EN024 (Rare) - 2005-06-01
The Lost Millennium: TLM-EN024 (Ultimate Rare) - 2005-06-01
Dark Revelation Volume 3: DR3-EN204 (Rare) - 2006-11-25

Prices:

Cardmarket: 0.22 €
TCGplayer: $ 0.31