Heartbeast is initiated at the Gathering of Twelve Years, so unless you have exceptional timing a Bjornaer is initiated well before gauntlet.
Exactly, so what would happen if a Bonisagus took a Bjornaer who had undergone the ritual?
He dies.
That was my suspicion 
Didn't mean to be so blunt, but yeah. Once the magus undergoes the Ritual of Twelve Years, he's privy to what is probably the most closely-guarded secret in the Order. Once they know that secret, they know that it's not to fall into the hands of outsiders. Add to that the fact that, as far as the House is concerned, he's a full magus, even if he's not recognized as such by the non-Bjornaer houses. A Bjornaer would likely take his own life before letting the secret fall into outsider hands. Or, if he's somehow not able to do so, then I'm sure there's a sept in the House that ensures the safety of the secret of the Heartbeast.
Which raises the question (and this just now occurred to me): why has an unscrupulous wicked powerful Mentem magus pulled the secret from a Bjornaer's head and done something to try to either replicate it himself or get the secret out?
Knowing a Mystery is far different than knowing about a mystery.
It isn't about a secret that you know or learn, it is the secret you experience. A mind reader will just learn that he hase to experience the Ritual of Twelve years.
And for a Bjornaer, Initiating Heartbeast is synonymous with your Gauntlet.
The Criamon share the Enigma, and Faerie Magic lures others to Merinita. House Verditius has an extranged lineage or two. But Heartbeasts exists nowhere outside Bjornaer.
Except for werewolves 
Just because you've undergone the initiation doesn't mean you can initiate others in it.
I could see a Bjornaer "apprentice" killing a Bonisagus master who ganks him. Sinxe you're technically an apprentice, you haven't sworn the oath, and ripping the throat out of a man who steals you from your clan, takes you away from your territory, and calls himself your master? seems like a perfectly reasonable response.
Sounds like a Tytalus gauntlet 
I had forgotten that Bjornaer consider the apprenticeship finished after the Ritual of Twelve Years, and that the rest of the time is a formality to please the rest of the order.
I'm still working with the idea of someone who's interested in magic theory and experimentation. In terms of Heartbeast, I'm a bit torn. A hound could work in the caretaker/shepard role, a stag as protector of the herd ... perhaps a wolf as a pack leader or a lion as a king of beasts. I could also see a chimera of some flavor working, perhaps a pegasus or griffon? Griffon seems resonant with the mountainous territory, was it said there were some in the area? If so, perhaps my last season before starting the saga could be awakening the Inner Heartbeast with a great beast near the covenant, having just fulfilled his quest, and ready to settle down and work on his menagerie ...
You don't like the Ibex idea, eh? For what it's worth, it went extinct in the late 90's, so it sorta qualifies as a Mythic beast. And they resuscetated the species breifly a few years ago. A clone, with died shortly after birth. They are trying another experiment I think.
Inner Heartbeast is cool, and is where I got the idea of how to define what a Chimera is in terms of mythic beasts. And yes, there are many Griffons nearby, and the Grey Griffon is endemic to the Pyrenees. Start off with an eagle or lion heartbeast, and develoip the traits of the other.
I am now off to reread Inner Heartbeast and see if it works like I remember 
Guys!
Discussions about the application of rules should go here, not in the middle of the story.
Anyways, Ryu is right
Just to sweep it under the rug, I will roll for you.
It was a "1" then a "0". Concentration 20+.
And it is really no big deal because it was a hunt for null information anyway.
I knew this MuVi a spell into any other spell was a bit strange and looked too easy. It requires a Concentration roll in order to simualcast the two spells, and this is the only incident in which one can cast two spells at the same time (MuVi spells that is).
Looking at the guideline, I would say that what you did counts as a "Total Change", and at R: Touch (needed for your own MuVi Spells), the base level is equal to the level of the spell so changed. Being a CrVi10 spell.
?
Anyway, that means at least level 20 for a change of up to 2 magnitudes, Technique, & Form. CrVi to InCo, increasing Touch two magnitudes to Sight. And I will charge you a magnitude for changing both the Arts and the Range in one spell.
MuVi25.
Which you totally had. So no worries there.
Mega Meta Magic is fun and pretty cool, but it has its limits 
And I have found a new Dice Roller
The Dice Room :mrgreen:
Let's be clear, though. I wasn't arguing about the Concentration roll. There are no two spells at once, and that is what David Chart disagreed with. It makes a big difference in timing. I did think you rolled twice, and only two rolls were necessary: MuVi and Concentration (only one). The other was an automatic success.
Hmmm... I'm not increasing Touch to Sight, it was at Sight already. Or do you mean figuring out the InCo spell requires increasing it by 2 magnitudes off what is in the book?
It DOES make a big difference in timing. He can disagree on the forums all he wants, but if he doesn't include it in the errata, that indicates it didn't make muster, because it doesn't make sense.
You can't cast metamagic on a Momentary spell before you cast it, because the target doesn't yet exist. You can't cast metamagic on a Momentary spell after you cast it, because the effect already took place and the target no longer exists. For Momentary spells, the only way it makes sense is if they are cast simultaneously.
I realize that this is way more open for abuse; from a balance perspective, it's better for a metamagician to take two rounds to cast a spell that is outside his own innate abilities, rather than the one round it would take a magus who had the appropriate skill to cast it directly. But it simply does not make sense unless metamagic is cast simultaneously with its target effect.
Did the MuVi guidelines get errata'd?
By my reckoning, to change a CrVi10 to an InCo10 requires that the base MuVi effect be 20: half of 25 is 12.5, of which a lv10 spell is less than (though I suppose it gets murkier if you are peculiar about rounding to the nearest magnitude). MuVi20 is sufficient as a "Total Change" to affect both the technique and the form without any additional magnitude, because it's specified in the guideline that it can change both. Also, "Touch range is sufficient to affect your own spells" so there's no need to bump it to Sight (and it doesn't matter what range the target spell is, what matters is the range of the MuVi effect, that it can "reach" the spell itself, not the target of the target spell).
What am I missing?
Let's start over here. Your math is off in the beginning, but some other points are correct.
The base to change a level-10 spell would be that the base +1 magnitude be double 10. Double 10 is 20. One magnitude below 20 is 15. So the base is 15. This moves up to level 20 to do it at R: Touch. We decided before to include another magnitude for changing both Technique and Form, so bump that up to 25.
You're also not supposed to be able to cast more than one spell in the same round. So how do you reconcile that with not needing to fast-cast the MuVi except on an opponent's spell?
So it makes sense to you to simultaneously speak two different sentences and have your fingers and hands waving around in to different places at once? (E.g. your right index finger is in two different places at the same time.) That's what simultaneously casting two spells would be. To me that sort of bi-location is nonsensical.
For analogy, think of aiming a gun toward a corner while waiting for someone to peak out from behind the corner. You're not aiming at the person, but you know where to expect the person. This is really the same thing as any sort of aiming at a non-stationary target. You aim ahead of the target, not at the target. You aim where the target isn't so that by the time you finish the target is where you aimed. This is how aiming works in real life. I don't see why it has to be so nonsensical for aiming that had be understood for millenia to be different for spells.
You still need a Concentration roll. The rules are clear as day concerning that.
But it is a moot issue and in the past. Let us move forward.
And citing David Chart is a logical fallaciy known as "argument from authority". I have worked with David before on a few books. He can be pretty logical, but can also twist and turn to adapt to the situation. DC is not the GM here. I am.
Good point-- yes, at least one of the two spells should necessarily be silent and without gestures.
...If skeet winked in and out of existence in the briefest of moments, you wouldn't be able to lead it with a rifle, either, and you'd certainly never successfully shoot it.
Nope. That would be the case if the phrasing were "...up to" but it's precisely phrased as "less than...." Working backwards is more penalizing due to magnitude rounding.
That is what it says. There was a typo originally.