Dark Grepher

Level 4 DARK/Warrior Effect Monster
1700 ATK / 1600 DEF

You can Special Summon this card (from your hand) by discarding 1 Level 5 or higher DARK monster. Once per turn: You can discard 1 DARK monster; send 1 DARK monster from your Deck to the GY.

Rulings – Yugipedia

Printings:

Phantom Darkness Sneak Peek Participation Card: PTDN-ENSP1 (Super Rare) - 2008-01-26
Phantom Darkness: PTDN-EN000 (Secret Rare) - 2008-02-13
Turbo Pack: Booster Three: TU03-EN001 (Ultra Rare) - 2010-07-10
Duel Terminal 6b: DT06-EN058 (Duel Terminal Normal Parallel Rare) - 2012-05-25
Legendary Collection 3: Yugi's World Mega Pack: LCYW-EN208 (Common) - 2012-09-29
Pendulum Domination Structure Deck: SDPD-EN017 (Common) - 2017-01-19
Dark Saviors: DASA-EN042 (Super Rare) - 2018-05-24

Prices:

Cardmarket: 1.79 €
TCGplayer: $ 2.32