Odhanan
Adventurer
Whats the plural?
Vises?
Visae?
Viss?
Vis?
As in I've got 50 vises left .. or are those vis points?
Vis, Vis - pl. Vires (irregular)
Vis/Vis/Vim/-/-/Vi
Vires/Vires/Vires/Virium/Viribus/Viribus
As for mana, I think its use is just fine.
http://en.wikipedia.org/wiki/Mana