Raise a glass dome over one file. For the game, your pawns may promote one rank early, on your 7th rank instead of your 8th, when they advance along that file, capture out of it, or capture into it.
You draft Greenhouse in Buff mode. Activated: you choose when to use it, and using it is your move for that turn.
As a pieces card, it summons, revives, promotes, or converts a piece.
“Everything grows faster under glass.”
Affects your pawns.