Fire Burst

root@vladof-db:~$ cat description.txt

A Vladof area grenade that throws out four horizontal jets of flame which rotate around the impact point for several seconds. The spinning fire can hit several targets inside the effect and even damages enemies that resist fire, but its coverage is fairly tight and solid cover blocks the flames completely.

root@vladof-db:~$ cat notes.txt

It drops randomly from standard loot sources.