The core pieces beyond the three-cost characters center on Merlin Rabbit and Goat
Each Room card has two halves called "doors." When casting: - Choose one door to unlock - Pay the mana cost of the chosen half - Only the unlocked half's abilities apply After a Room is on the battlefield: - Unlock the other door by paying its mana cost as a sorcery - Unlocking is a special action that doesn't use the stack - Both halves' abilities become active after unlocking If a Room enters without being cast: - Both doors start locked - Unlock either door by paying its mana cost as a sorcery Characteristics of a Room card: - On battlefield: Based on unlocked door(s) - In other zones: Combined characteristics of both halves Copying a Room: - Copy has the same doors unlocked as the original - Locked doors of the copy can be unlocked later Dollmaker's Shop // Porcelain Gallery As a two-drop, Dollmaker's Shop is an efficient token generator that's already quite exciting in Commander

Interestingly, this is a functional reprint of a card in green that does the exact same thing, Parallel Lives (mentioned below)
#23 Basically I'm going: Colors that want walls: Colors that have walls in my cube: #24 Admittedly a 8-9th pick defensive card is kinda what I'm looking for
Whispering of the Wilds and Map the Wastes are the main ramp cards and surprisingly, they are both very strong
Hes wise, aggressive, ruthless, evil, and thats what Grixis is all about