d12 Weird Magic Swords

Arlac the Smith made various weapons to arm those who arose from the darkness but as he ran out of bronze and iron he resorted to stranger materials and each blade was used by one of the great heroes in the great war against the minions of the void. They are all intelligent and judgemental. They seek to find and slay monsters serving evil and darkness. Against foes that are not both they rarely show any interest and their powers may be muted. Once a hero has shown some worth they will be spoken to by the sword

At zero level wielder can use blades as a magical weapons but not +1

At level 1-4 each blade has these powers
+1 magical blade 
+2 vs evil beings (always one extra + above weapons plus)
+3 evil & darkness beings (always one extra + above weapons current plus)
Detect evil & darkness within 10 range from feelings of danger from the sword
Users get funny feelings from the weapon 
5-8th Lv user may speak telepathicly directly to user advising them, glow as lantern at will
9-12th Lv weapon speaks as any character and knows d4+1 languages
13-16th Lv weapon leap range 3, into users hand or as it wills, Dance round/Lv once per day 
17-20th Lv weapon teleports into users hand at will

The blades have been known to change type in different ages as if they like to keep up but others like the more ancient styles by default (change style once per month)

The elder lore of each item is some serious personality interest the sword won't shut up about once they think you are worthy to speak to.

d12 Swords of the second Dawn
1 Koronryn the stone sword
2 Aregnor the obsidian sword
3 Mikka the copper sword
4 Vagfenroc the brazen sword
5 Ollus the iron sword
6 Cyrion the silver sword
7 Bloraddon the blood sword
8 Ouranos the wooden sword

9 Elkragon the ice sword

10 Vilra the bone sword

11 Silmanus the crystal sword

12 Valetan the gold sword

1 Koronryn the stone sword the blade of the bastion
Killed the last evil titan in the mortal world then fell into a crack from dead heroes hand
At level 5-8 the sword is +2  add d8 extra HP reroll each day, immune to slow spells 
At level 8-12 the sword is +3 the weilder is immune to petrification
At level 13-16 the sword is +4 the weilder is immune to poison & paralasys
At level 17-20 the sword is +5 summon a 16HD elemental ten minutes once a day
Secret Lore: encourages user to care for land and natural resources 

2 Aregnor the obsidian sword the blade of the void
Severed the dark lords link to the void beyond causing his cult from magic

At level 5-8 the sword is +2 +d3 bleeding damage from any wound (one per round)
At level 8-12 the sword is +3 first mortal enemy killed per day raises as obedient shadow
At level 13-16 the sword is +4 teleport through any shadow to another within 3 range
At level 17-20 the sword is +5 summon a 16HD vacuum elemental (as an air type) ten minutes once a day
Secret Lore: enjoys killing and violence and massacres

3 Mikka the copper sword the blade of storms
Wielded by the lord of the air when he sealed the dragon spawn pits

At level 5-8 the sword is +2 and causes an extra d3 electrical damage
At level 8-12 the sword is +3 can levitate at will
At level 13-16 the sword is +4 shoot a 6d6 lightning bolt once every six hours
At level 17-20 the sword is +5  summon a 16HD shock elemental (as fire but electrical damage) ten minutes once a day
Secret Lore: wielder is watched by sky gods who weapon reports to secretly at first

4 Vagfenroc the brazen sword blade of the burning eye
Pierced the eye of the glaring one from beyond and drove back a chaos incursion
At level 5-8 the sword is +2 and causes an extra d3 flame damage and lights as torch
At level 8-12 the sword is +3 can speak to any fire planar or mortal creatures
At level 13-16 the sword is +4 Imune to fire & heat
At level 17-20 the sword is +5 summon a 16HD fire elemental ten minutes once a day

Secret Lore: pyromaniac loves to spread terror and disorder in enemy area

5 Ollus the iron sword the blade of the deathbringer
Used by crusaders against the elder lich lords and their living minions 
At level 5-8 the sword is +2 and causes an extra d3 necrotic damage
At level 8-12 the sword is +3 can cast invisibility to undead 3 times a day
At level 13-16 the sword is +4 wielder immune to death spells
At level 17-20 the sword is +5 summon four Xeg-Yi imprisoned by the lords of light ten minutes once a day
Secret Lore: wants to find and kill undead and those who make them

6 Cyrion the silver sword the blade of the dawn star
Used by star spirits to drive off evil stars that allowed the void entry to the world
At level 5-8 the sword is +2 and can make light as lantern and heal extra d6HP a day
At level 8-12 the sword is +3 any struck shapeshifter save or revert to original form
At level 13-16 the sword is +4 can cast invisibility once per ten minute turn
At level 17-20 the sword is +5 summon four Xeg-Ya servants of the lords of light ten minutes once a day
Secret Lore: The spirit of the sword is a star princess who pines for her family

7 Bloraddon the blood sword the thing that should not be
This crimson moving blood sword is a horrific living thing that hungers to kill

At level 5-8 the sword is +2 and +d3 damage from viscious sword bite
At level 8-12 the sword is +3 screams with hunger cast cloak of fear 3 times a day 
At level 13-16 the sword is +4 once per round you injure a living creature heal 1HP
At level 17-20 the sword is +5 summon a 20HD meat collosus from the world of Xor for one task, after it wanders off to find own destiny and food
Secret Lore: the blade was taken from the flesh of Xor the living world of flesh and it is always hungry for flesh to bite

8 Ouranos the wooden sword the heart of the forest

Used by the elves first then the druid lords on their rampage of reforestation
At level 5-8 the sword is +2 ignores non magical metal armour
At level 8-12 the sword is +3 gain +1 attack via a d6 arrow as a shortbow per round
At level 13-16 the sword is +4 heal d3 after each fight by sprouting magic herbs
At level 17-20 the sword is +5 turn a large tree into a treeant once per day

Secret Lore: Spirit of the blade is a nature elemental sprinkles seeds as you travel

9 Elkragon the ice sword the blade of the sleeping hero

This great ice splinter was used by the champions of the north vs fire demons
At level 5-8 the sword is +2 plus d3 cold damage
At level 8-12 the sword is +3 immune to cold damage and freezing
At level 13-16 the sword is +4 can sleep frozen for any amount of time desired
At level 17-20 the sword is +5 summon a 16HD ice elemental ten minutes once a day

Secret Lore: without a crisis to fight the sword implores user to sleep until the next one

10 Vilra the bone sword the blade of vengance

This sword was infused with underworld energy seeking revenge on evil
At level 5-8 the sword is +2 -1 damage per dice from blunt or crush attacks
At level 8-12 the sword is +3 half damage from blunt or crush attacks
At level 13-16 the sword is +4 Undead struck save or disintergrated if less HD than user
At level 17-20 the sword is +5 Summon 2 10HD skeleton warriors for ten minutes once a day and each has a +3 sword (all traces vanish after duration)

Secret Lore: The blade has twin spirits of skeleton warriors within forced to serve the sword for eternity. Sometimes the main sword spirit will let you speak with the skeleton warriors instead for dark secret lore 

11 Silmanus the crystal sword the singing sword of victory

This most famous sword cut the astral cord of the thing from beyond banishing it
At level 5-8 the sword is +2 plus d3 sonic damage and can produce light as a lantern
At level 8-12 the sword is +3 sonic blast 3d6 to all in 1 range once per hour (save halves) and user immune to sonic damage
At level 13-16 the sword is +4 cast disintergrate spell once per day
At level 17-20 the sword is +5 summon a 16HD sonic (as air) elemental ten minutes once a day
Secret Lore: Once the sword deems a weilder worthy for it to speak it wont shut up but often sings

12 Valetan the gold sword the destroyer of death
Created to destroy the powers of the death templars a fearsome necromantic cult
At level 5-8 the sword is +2 plus d6 holy damage vs undead or evil other planar foes 
At level 8-12 the sword is +3 circle of protection from undead for ten minute turn once an hour which manifests as a glow, produce light as a lantern at will
At level 13-16 the sword is +4 weilder does not age, breathe or eat and resists poison and disease
At level 17-20 the sword is +5 summon a light elemental (as fire) ten minutes once a day
Secret Lore: The sword is pretty sure the biggest problems in the world it has thwarted but once convinced some new target is a worthy foe they become fanatic. Very lawful it does not like lies, cheating or tricks much