Turin the Mad wrote:
The black blade probably cannot be enchanted - it's a weapon version of a familiar.
The bladebound Magus gets a free magic weapon that costs next to nothing to replace at 3rd level. At 19th level, that's a FREE +5 vorpal sword - using your Magus' arcane pool to add that lovely vorpal property - that gibbers or what ever your particular black blade does while swallowing souls with every killing blow or head lopped off.
As far as I can tell, there is no cap for a normal magus. IE - at 20th level, they could have a +5 longsword with another +5 of abilities. And then use their arcane pool to add another +5 of abilities.
