yugioh equip deck Generic Complete Custom for Yu-Gi-Oh! Weekly Custom Card Competition (CCC)

With just the existing cardpool at play, Card of the Day currently provides enough daily social media content for the next 27 years, although with new cards being released on a bi-weekly basis this content pool is theoretically infinite and can last well beyond the game's lifetime.

Features: Dive into Final Fantasy, and experience quintessential Magic: The Gathering by playing with and collecting cards selected to give every player the advantage

As a note, there are plenty of other cards with the Secret Lair set symbol that could have made this list

C Common Dark Room of Nightmare X SPELL Continuous Each time your opponent takes damage from a card effect, except "Dark Room of Nightmare", inflict 300 damage to your opponent