The Phantom Knights of Silent Boots

Level 3 DARK/Warrior Effect
200 ATK / 1200 DEF

If you control a "The Phantom Knights" monster, you can Special Summon this card (from your hand). You can only Special Summon "The Phantom Knights of Silent Boots" once per turn this way. You can banish this card from your GY; add 1 "Phantom Knights" Spell/Trap from your Deck to your hand. You can only use this effect of "The Phantom Knights of Silent Boots" once per turn.

Rulings – Yugipedia

Printings:

Wing Raiders: WIRA-EN002 (Super Rare) - 2016-02-11
Battles of Legend: Relentless Revenge: BLRR-EN062 (Secret Rare) - 2018-06-28
Legendary Hero Decks: LEHD-ENC02 (Common) - 2018-10-04
Maximum Gold: El Dorado: MGED-EN079 (Rare) - 2021-11-18
OTS Tournament Pack 18: OP18-EN016 (Common) - 2022-02-17
OTS Tournament Pack 18 (POR): OP18-PT016 (Common) - 2022-02-17
Battles of Legend: Chapter 1: BLC1-EN116 (Common) - 2024-02-22
25th Anniversary Tin: Dueling Mirrors: MP24-EN039 (Quarter Century Secret Rare) - 2024-09-19

Prices:

Cardmarket: 0.08 €
TCGplayer: $ 0.10