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Nolina creates a wall in the shape of a trapezoid (I can't draw it on my phone).
From Coriel, move 4 hexes northeast in a line.
From the southernmost point of this line, move 3 hexes south.
From the southern point of this line, move southeast to the forest, right next to it (3 hexes).
In total, this trapezoid without a bottom will block the entire eastern enemy group.
In addition to this, block the Inquisitor's retreat to the east with two hexes.
A total of 12 hexes are used.
Coriel casts Shield on Raum.