Paladin of White Dragon

Level 4 LIGHT/Dragon Ritual Effect
1900 ATK / 1200 DEF

You can Ritual Summon this card with "White Dragon Ritual". At the start of the Damage Step, if this card attacks a face-down Defense Position monster: Destroy that face-down monster. You can Tribute this card; Special Summon 1 "Blue-Eyes White Dragon" from your hand or Deck, but "Blue-Eyes White Dragons" cannot attack for the rest of this turn.

Rulings – Yugipedia

Printings:

Magician's Force: MFC-026 (Ultra Rare) - 2003-10-10
Starter Deck: Kaiba Evolution: SKE-024 (Common) - 2004-03-01
Dark Revelation Volume 1: DR1-EN081 (Super Rare) - 2005-03-19
Duelist Pack: Kaiba: DPKB-EN024 (Rare) - 2010-04-16
Speed Duel: Battle City Box: SBCB-EN185 (Common) - 2020-11-26

Prices:

Cardmarket: 0.06 €
TCGplayer: $ 0.37