I think 'blink "as a blink dog"' means just the blink ability, not also the dimension door ability. They're separate. I would be happy with the 10 rounds/day as you suggest.
I'd make it a property of the sword, too. It stands to reason that a general would have a pretty nice weapon or two.
Sure. A 13th level NPC like the General ought to have about 35,000 gp worth of gear according to the 3E treasure tables.
Anyway, how's this for a start?
Crimson Katana: NE +1 flaming katana. The wielder can act as though affected by a blink spell for 10 rounds each day. The duration of the blink effect need not be consecutive rounds. Also, the owner can issue a mental command at will to the crimson katana that causes it to teleport unerringly to his hand; if a new owner comes into possession of the katana, it requires 2? hours of quiet meditation with the sword to reset the sword's teleportation ability.
That feels a bit awkward, but I think it's what we're trying to do.
A "katana" is officially a masterwork bastard sword in 3E, so we'd better use
+1 flaming bastard sword rather than "
+1 flaming katana.
It also needs mental abilities plus an Ego score if it's an Intelligent weapon.
Here we strike a slight problem in that the sword is unable to speak (or at least there's no mention of it speaking), which according to the Intelligent Magic Items Table means its an "Empathy" level weapon with only one or two lesser powers.
Teleporting and
blink are probably both greater powers going by the various Powers Tables for intelligent magic items. To keep within the rules we could make it smarter but have it refuse to communicate with living creatures.
Also, according to the original description it teleported to the user's hand
when disturbed, not when the wielder commanded it. That sounds like it's up to the sword.
The Special Purpose Item Dedicated Powers table includes a "Item can use
dimension door on itself and wielder" at will, which seems the closest to a
teleport power. It also costs 50,000 gp! That's about the same as the 49,000 gp price of
boots of teleportation.
Of course, it's only the sword that teleports, but still it might be better to have it only able to teleport a few times per day. We could also give the teleport a rather short range - maybe the sword has to be able to see its wielder to teleport to him?
If we stuck to the rules for magical items, it'd need to be something like this:
Crimson Katana: This +1 flaming bastard sword is an intelligent magic item with the special purpose of shedding the blood of the living. It has the following statistics:
Strong conjuration; CL: 13th; Alignment: Neutral evil; Saves: Fort +8, Ref +8, Will +12; Abilities: Int 10, Wis 18, Cha 18 Ego 20; Senses: 120 ft. darkvision, blindsense and hearing, telepathy (with owner only), plus continual deathwatch and read magic; Skills: Listen +14, Spot +14; Saves: Fort +8, Ref +8, Will +12.
The crimson katana is capable of speech (in Common) and can communicate telepathically with its wielder, but refuses to communicate with any living creature. It can read all languages as well as use read magic. The sword has three lesser powers, one greater power and one dedicated power. Its lesser powers are the skills Listen and Spot (10 ranks each) and continually active deathwatch (as the spell).
The sword will only allow a wielder it accepts as its "master" to use its powers. Mastering the crimson katana requires the wielder to meditate in front of the sword for at least an hour and then succeed at a DC 20 Will saving throw to dominate the weapon's Ego.
The crimson katana's greater power is to enable its master to act as though affected by a blink spell for up to 10 rounds each day. The duration of the blink effect need not be consecutive rounds.
The katana's dedicated power is to teleport into its master's hand as per the teleport object spell. The sword will teleport to its master whenever a being who is not its master disturbs it. The sword will also teleport to its master if it telepathically senses that its master desires to harm a living creature, or if it notices (using its 120 ft. range senses) living enemies threatening its master. The crimson katana is drawn by the opportunity to draw blood, not any sympathy for its owner.
Going to the SRD Intelligent Item rules, the above should have a price of roughly 95,035 gold pieces, which is WAY more than a 13th level NPCs wealth-per-level.
It does fit (barely) within a 13th level PCs 110,000 gp wealth-per-level though, and the item looks a lot less useful than its price indicates. Its desire to make everything it meets bleed is a bit of a drawback, for a start!
For the price guesstimate, I used:
335 masterwork bastard sword
+8000 +2 bonus (
+1 flaming)
+12000 two greater powers level of intelligence
+12700 three lesser powers (two skills plus
deathwatch)
+12000 greater power of blinking (estimate cost =
boots of speed)
+50000 dedicated power of teleport object (estimated cost = at-will
dimension door dedicated power)
The "teleport to hand" power seems grossly overpriced as do the two "skills" powers - and I only gave them the latter because the SRD insisted it must have three lesser powers.
If you can find that "teleport to hand" item, Freyar, we might have precedent for a more reasonable price.