Phospherous Grenades

Yeah I got the idea from Rainbow Six 3. And it's not like a molotov as it uses phospherous which is far more deadly than fuel as it burns at a higher temperature (watch We Were Soldiers and burns off the entire guys face pretty much) and is very difficult to stop. You pretty much have to cut the burning skin off to get out of it. They also have a very wide area of effect probably only beaten by fragmentation grenades and can come in different colours. They also leave an obscuring cloud of smoke in the area depending on the grenade type (usually red or white smoke) so they can double as a small time smoke grenade. But it's mainly the wide area of effect and severe burning they cause that make them so effective. After all, Crossfire doesn't have any incendiary grenades at the moment.