|
1) You always need to give a weapon at last a +1 magical bonus to make it a magical weapon and add other abilities.
2)
a) Bane(Undead);
+1 enhancement
b) Distance;
+1 enhancement
c) Holy;
+2 enhancement
d) Merciful;
not available for ranged weapons (there are 2 different tables, one for meele weapons and one for ranged weapons)
e) Seeking.
+1 enhancement
3) total enhancement
+1 (base) +1 (bane) +1 (distance) +2 (holy) +1 (seeking) = +6
72.000 gp for those power alone.
4)
a) Haste;
b) Magic Missile; and
c) Sunburst.
Exactly what should do those spells?
a) If haste is user only, always in effect, you should use the speed ability (+3 enhancement)
If it is a spell that the bow user can cast x times a day you should refer to the wondrous item section for his price.
b) magic missile
redundant and counter intuitive in the hands of a archer.
c) sunburst.
If it is a spell that the bow user can cast x times a day you should refer to the wondrous item section for his price.
In alternative you can make the bow intelligent and give it those spells, but that is another set of pricing.
All inclusive you seem to be pricing a artifact level weapon.
Final note:
almost certainly this thread will be moved to the suggestion and homebrew as all custom magic items are considered homebrew.
In addition to what Diego said (although making a bow shoot magic missiles sounds fine to me, even though it makes seeking redundant):
A) For an item with several effects (including the plus equivalent effects) each one has a caster level and an aura. The item as a whole takes the aura (and caster level) of the single highest-CL effect.
B) For x/day abilities, simply add them as a separate, non-plus-equivalent effects. (I'm of the opinion that anything continuous or use-activated on a weapon or armor should be given a plus-equivalence, but there's no guidelines for that.)
C) The item will be the masterwork item price plus the plus-equivalent price plus any other magic prices.
D) You can pay for it in pieces or all at once. It generally won't make any difference in time or money. (Rounding issues can raise the time it takes, but probably not by much relative to the 100 or so days this would take anyway.)
Edit: In general, it's not terribly useful to say you want to incorporate, say magic missile. You really should start with (or state) what you want the end results to be, and then work backwards from there.