Well it seems people dont even know what I'm talking about and your assumptions are just wrong so let me state the obvious.
Last stand is the 120 point passive in the mage-ritual.
The 4 Skills in there are
1. crit dmg of physical attacks
2. physical penetration
3. physical dmg modifier
4. increase dmg with poison,desease,magic (which doesnt apply on elemental spells)
So there is NOTHING! for magicka users, also magicka users want to invest points into mage-apprentice since its their main constellation.
Stamina users can more or less only skill into ritual, therefor stamina users will have this passive more than twice as fast!
yes there are a few magicka skills which scale with magic dmg, never wrote something different though ..
Either way 1 feat that applies only to a select few abilites ist not a viable option to get a 120 point passive.
So put something that everyone needs into a constellation everyone can spec into and give this stamina tree something for stamina users.