When each turn starts, if 2 or more of your opponent's units were discarded from the same arena last turn, choose one: Each of your units in that arena gets +1 power and Fury 1 until end of turn. Or: Discard the Location from that arena.
Keywords
Fury
Fury X: A cumulative ability triggered by the initial dice roll that means, "When you roll at least one natural four with this unit's attack dice before re-roll, roll X additional attack dice." Only the first natural "4" counts. A four rolled after re-roll doesn't matter. If your unit gets the Fury ability after you roll attack dice, it's too late to roll additional attack dice. Fury applies only to dice rolled for an attack, not to dice rolls for abilities like Retaliate. Accuracy can't increase the die roll to a natural "4."