7in1=0.5 (for damaging the surrounding tiles, I think

, doing 0.5x damage to the surrounding fields)
friendly_fire=0 (will prevent allied units of taking damage)
device= (will give you the effect of the attack, e.g. device=deathcloud would be the black smoke and the black ghosts of the necromants attack)
what I don't quite understand is:
dontusenearenemy=1 (isn't that so you don't use ranged attacks, when an enemy is on an adjacent field?)
as for the burn damage, is there any precedence that you can have multiple damage types? Witout a script?