If your first move is a d- or e-pawn move, the four center squares flash until your opponent replies. Judged once, on your first move.
You draft Hearth Blessing in Buff mode. Passive: it works on its own the whole time you hold it, with nothing to activate.
As a movement card, it changes how one of your pieces is allowed to move.
“Feed the center fire first and the house stays warm.”