<count> <card name>; a
Sideboard line splits maindeck from sideboard. The count sets a
nominal (how many the reference list runs — every deck's diff is
measured from it) and an allowed range. A card whose count stays inside its
range still shows its delta but isn't flagged as tech:
4 Lightning Bolt — exactly 4 (nominal 4, no tolerance).2-3 Mountain — allowed 2–3; nominal is the low end (2).10 (8-10) Fetchland — nominal 10, allowed 8–10.Fetchland line.