Djinn Prognosticator of Rituals

Level 3 DARK/Fiend Effect Monster
400 ATK / 300 DEF

When you Ritual Summon a monster, you can banish this card from your GY as 1 of the monsters required for the Ritual Summon. If you Ritual Summon using this card, if that Ritual Summoned monster inflicts battle damage to your opponent, they discard 1 card.

Rulings – Yugipedia

Printings:

Absolute Powerforce: ABPF-EN038 (Rare) - 2010-02-12
The Secret Forces: THSF-EN039 (Super Rare) - 2015-02-12
Speed Duel Starter Decks: Match of the Millennium: SS04-ENB15 (Common) - 2020-05-15

Prices:

Cardmarket: 0.10 €
TCGplayer: $ 0.10