Whenever a unit of Tarkans moves within 6" of a building or forest they may set it on fire
For the rest of the game, every unit within that building or forest will take D6 Flaming S 4 hits at the start of every turn for as long as they remain there.
Tarkans may also throw their torches 6" against war machines and chariots. Roll to Hit as if they were using a throwing weapon. War machines and chariots take D3 S 4 hits for every torch that hits.