Explosive Discus

[Barrok]

Explosive Discus
This one shot weapon is inscribed with runes aiding its flight and delicvering a massive explosion. The discus has the same range as a shortbow and if it hits a creature it does 1d6 point of bludgeoning damage (*2/19-20). When it hits anything it will explode doing a further 4d6 points of fire damage to all in a 10'r, ref save (DC16) for half damage.
These weapons are counted as simple weapons


Caster Level 9: Prerequisites; Craft Wondrous Item, Fireball, Magic Weapon. Marke Price 750gp

[Knight of Roses]

What sort of weapon proficiency is needed to use the discus? Simple? Martial? Exotic? Note that on a missed attack used the throw splash weapons scatter rules, PHB 158 (because it is going to hit something). The discus could be used in the same one to target a square rather than a person, in which case it just detonates.

For cost, about 750 I think. It almost falls into a wondrous item rather than a weapon. Does that sound reasonable? And add magic weapon to the spells needed to create it.

[Barrok]

Bumping this to see if anyone has anything to say on it.