Or maybe once a Sylvester, maybe at the halfway point of the Graalian Year, the flags appear for a full regular day, same rules, maybe each kingdom can devise their own traps within reason (you can only do so many fullhearts damage total, or something....1 fireball trap or 2 arrow traps, etc.), same thing with the flags, but the kingdom that steals the most flags gets control over the kingdom that lost the most flags for the rest of the year.
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