The Angelslayer was forged in Evernight and brought to Shem in a place of intense betrayal and darkness by the Centipede. It was then carried by Srisian agents to the Webweaver, who Mastered it using a blackhole formed by the collapse of time itself. It is empowered by the evil of its bearer, but now that it has been Mastered, its powers are even more profound.

Normally, these charts apply:

Character/Race of wielder	Penalty/Bonus
Evil Nephesh or Logos	+70
Evil Divine	+40
Shadowkin	+37
Evil Aeonian	+34
Demons	+25
Serial killer	+19
Evil saint	+16
Evil Races	+10
Basically awful person	+9
Neutral Being	0
Basically decent person	-9
Good Races	-10
Good Saint	-16
Brightane, Etherion	-18
Angels	-25
Shepherd of Kindness	-31
Good Aeonian	-34
Good Divine	-40
Good Nephesh or Logos	-70

The good in the foe will also affect the modifier:

Character/Race of wielder	Penalty/Bonus
Evil Nephesh or Logos	-70
Evil Divine	-40
Shadowkin	-37
Evil Aeonian	-34
Demons	-25
Serial killer	-19
Evil saint	-16
Evil Races	-10
Basically awful person	-9
Neutral Being	0
Basically decent person	+9
Good Races	+10
Good Saint	+16
Brightane, Etherion	+18
Angels	+25
Shepherd of Kindness	+31
Good Aeonian	+34
Good Divine	+40
Good Nephesh or Logos	+70

However, as a Mastered blade, these modifiers for targets now apply:

Character/Race of wielder	Penalty/Bonus
Evil Nephesh or Logos	0
Evil Divine	0
Shadowkin	0
Evil Aeonian	0
Demons	0
Serial killer	0
Evil saint	0
Evil Races	0
Basically awful person	0
Neutral Being	+6
Basically decent person	+15
Good Races	+16
Good Saint	+22
Brightane, Etherion	+24
Angels	+31
Shepherd of Kindness	+37
Good Aeonian	+40
Good Divine	+55
Good Nephesh or Logos	+100