World Legacy Scars

Field Spell Card

All "Mekk-Knight" monsters on the field gain 300 ATK/DEF. Once per turn: You can discard 1 "Mekk-Knight" monster or 1 "World Legacy" card; draw 1 card. You can banish 8 "Mekk-Knight" monsters with different names from your GY and/or face-up from your field; send your opponent's entire hand and Extra Deck to the GY.

Rulings – Yugipedia

Printings:

Extreme Force Sneak Peek Participation Card: EXFO-ENSP1 (Ultra Rare) - 2018-01-27
Extreme Force: EXFO-EN056 (Rare) - 2018-02-01
2018 Mega-Tin Mega Pack: MP18-EN205 (Rare) - 2018-08-30

Prices:

Cardmarket: 0.10 €
TCGplayer: $ 0.20