The Astrology Lands: Gemini was a five-card Secret Lair drop featuring five copies of a full-art Mountain illustrated by Jeanne D’Angelo. The artwork gave the basic land a distinctive astrological identity inspired by the Gemini zodiac sign, making it a themed collectible for players looking to represent their sign in their decks. It was part of the monthly Astrology Lands series, which released a different zodiac-themed basic land throughout 2022.
Given the rarity and limited information on some bonus cards, this may not be a complete list of all potential bonus cards available in this Secret Lair.
Eldrazi Monument
Creatures you control get +1/+1 and have flying and indestructible.
At the beginning of your upkeep, sacrifice a creature. If you can't, sacrifice this artifact.
{1}, {T}: Target player mills a card. (They put the top card of their library into their graveyard.)
Tap four untapped Advisors you control: Target player mills twelve cards.
A deck can have any number of cards named Persistent Petitioners.
{T}: Add {C}.
{T}: Add one mana of any color. Spend this mana only to cast a Sliver spell.
{5}, {T}: Create a 1/1 colorless Sliver creature token. Activate only if you control a Sliver.
Equipped creature has hexproof and haste. (It can't be the target of spells or abilities your opponents control. It can attack and {T} no matter when it came under your control.)
Equip {1} ({1}: Attach to target creature you control. Equip only as a sorcery.)
