Any unshielded plot can be taken for 1.2× its price. The price then climbs one level. Land is never wiped, it only changes hands.
The robbed owner's +8% is swapped into the district's tokenized stock on the spot. The campfire slice accrues in ETH to every owned plot and buys your own district's stock when you claim. Nothing is held back in the plot: 40% of every margin goes straight to the season jackpot.
A shield makes a plot you own unrobbable for 3 hours. It costs 10,000 $ROB, burned forever. Use it to hold a top-8 plot through a season finale. It cannot be extended early; when it drops, anyone can rob again.
Also burnable: 20,000 $ROB for 2% off a robbery. $ROB is never minted again.
Each robbery adds 60 seconds, never more than 6 hours ahead. When the clock dies the jackpot pays the last 10 robberies and the 8 priciest plots, by price; prices reset to 15% and a new season begins. Every payout is pull-based: hit Claim.