Gem-Knight Obsidian

Level 3 EARTH/Rock Effect
1500 ATK / 1200 DEF

If this card is sent from the hand to your Graveyard: You can target 1 Level 4 or lower Normal Monster in your Graveyard; Special Summon that target.

Rulings – Yugipedia

Printings:

Duel Terminal 6b: DT06-EN067 (Duel Terminal Rare Parallel Rare) - 2012-05-25
Hidden Arsenal 6: Omega Xyz: HA06-EN031 (Super Rare) - 2012-07-24
Astral Pack Eight: AP08-EN020 (Common) - 2015-10-23

Prices:

Cardmarket: 0.86 €
TCGplayer: $ 0.83