Ground-flame

Ground-flame is a hazard in Skirmish-mode or in Campaigns, where fire has been set on the ground and remains for a time. It inflicts damage on anyone who stands in its area, but can be put out by any builder.

All causes

 * Fire-bombs
 * Mordor Catapult projectiles
 * A Mighty Catapult's area of impact
 * Oil Casks dropped from a Dwarven Fortress
 * The Summoned Dragon's default attack
 * Fire Drakes' Cremate ability
 * The Balrog's Breathe-fire ability
 * Drogoth's Inferno
 * The Dragon-strike

Ground-flames are not caused by barrages of Fire Arrows, Magma Cauldrons' magma, Oil Barrels tossed from Battlewagons, nor even Dwarven Flaming Shot.