yugioh duelist pack battle city booster box Beyond The Brave Many powerful Spell and Trap Cards Battle City Finals Duel: Speed

Considering the premium prices that Secret Lair reprints usually bring, theres a fairly good chance that this Secret Lair will be a decent buy

That's some wall

Another factor is if the card was printed in limited amounts

Other death trigger cards that are highly valuable are Thornbite Staff, Fecundity, Vein Ripper, Sephiroth, Fabled SOLDIER / Sephiroth, One-Winged Angel, and Black Market

1998 Pikachu-Holo Illustrator $6,000,000 The pinnacle of Pokmon card collecting, incredibly rare and valuable

Now it's just a passive rule: all Seekers can, once per activation, draw line of sight for an attack through a friendly Lamp within 8"