Cards with the acorn symbol arent legal for play outside of Unfinity Limited
On top of the beautiful artwork, theres some real competitive power here
That's no accident
Everything in the lair is themed around tomb raiding, and lots of it is valuable: Search for Azcanta, Anger of the Gods, Bow of Nylea, Shadowspear, Academy Ruins Through the Wormhole - The cards in this Secret Lair aren't particularly valuable, but the contents - Lightning Greaves, Arcane Signet, Sol Ring, Thought Vessel, and Command Tower - are a complete playset of Commander essentials, in a beautiful and consistent art style by Dani Pendergast
In other formats, Naturalize is usually sideboard tech, but in this set, the Bear Down Adventure is highly relevant against anything from the Virtue enchantments to Roles, Food Tokens, and soft removal enchantments like Bitter Chill
Doublade's role in the mainline games is primarily as a regular encounter rather than a starter or rival Pokmon, but it has carved out a niche for itself due to its evolution into Aegislash, which is highly regarded for its competitive prowess