Mekk-Knight Blue Sky

Level 5 LIGHT/Psychic Effect
2000 ATK / 2500 DEF

If 2 or more cards are in the same column, you can Special Summon this card (from your hand) in that column. You can only Special Summon "Mekk-Knight Blue Sky" once per turn this way. If this card is Normal or Special Summoned from the hand: You can add "Mekk-Knight" monsters with different names, except "Mekk-Knight Blue Sky", from your Deck to your hand, equal to the number of your opponent's cards in this card's column. You can only use this effect of "Mekk-Knight Blue Sky" once per turn.

Rulings – Yugipedia

Printings:

Extreme Force: EXFO-EN014 (Secret Rare) - 2018-02-01
2018 Mega-Tin Mega Pack: MP18-EN177 (Secret Rare) - 2018-08-30
Structure Deck: Beware of Traptrix: SDBT-EN018 (Common) - 2023-02-23
Maze of Memories: MAZE-EN043 (Rare) - 2023-03-09

Prices:

Cardmarket: 0.08 €
TCGplayer: $ 0.09