Ice Dragon wrote:Killer Cyborg wrote:The description of the spell Light Blade.
It creates a sword, not a sword-cozy with stackable damage.
Also, it creates a sword with a size and shape that depends on the caster's level, so you'd have to have a changeable runesword or the cozy would either be two short, or two long most of the time.
On the other hand, the rune sword is casting the spell - so the level is fixed and will not change (e.g. Level 6 for greater rune weapons and Level 10 for greates).
Fair point there.
The spell description says, that it is cast in the spell caster dominant hand.
And since the Rune Sword is the caster, and it has no hand, the spell doesn't work, going by RAW.
So if you are hold the rune weapon in your dominant hand, the light sword will be created "over" the rune weapon, in case of the lesser hand, you will have to weapons - the light sword in your dominant hand and the rune weapon in the other.
There's no rules allowing the light sword to manifest "over" the rune weapon.
Similarly, if you're holding a sword, and you cast Throwing Stones, it does not mean that your runesword suddenly has a stone covering the hilt.
If you're holding a baseball bat, and you cast Frost Blade, you do not now have a baseball bat surrounded by a 4' long magic sword.
If you're holding a pistol, and you cast Fire Globe, you do not have a fire globe with a pistol in middle. Nor do you have a pistol that fires fire globes, or anything else like that. If anything, you just have a melted pistol.
Nor can you summon a Phantom Mount over an ordinary horse in order to give that horse more power.
Nor can you Summon Canines around yourself in order to have dog-armor, and extra damage to your bite attack.
There is nothing in the rules to allow summoned objects to appear over and enhance other objects.
Any exceptions are generally noted as such.
None of which is to say that I think it's criminal to rule that the sword in question works as you desire.
Just that it's not strictly legal- there are no rules allowing for it to happen, and there are reasons why it shouldn't/couldn't happen according to the actual rules.
If you want to play it the way you describe, more power to you- have fun.
Everybody house-rules stuff.