The A Box of Rocks Secret Lair drop released on November 30, 2020 and contains 5 cards. Each card's current singles value is shown below, with totals across both Cardmarket and TCGplayer — toggle between the cheapest available printing and the Secret Lair print to compare.

Arcane Signet

Chromatic Lantern

Commander's Sphere

Darksteel Ingot

Gilded Lotus