Would loves some feedback on an epic heist!

[Chuckwagon]

I need to pick your brain for a minute. I am in a home-brew pathfinder game and am needing some input. First off, player-on-player violence and the like is almost expected in most of our home brews....

Another party member (who happens to be a closet necromancer) and I (a wizard 1/rouge 1) got the info for our next mission and did some researching on our own about it. Turns out that the place we have to clear houses an artifact that has the power to reanimate at will. The rest of our group knows nothing of the artifact. They only know that they need top find the source of all of the troubles.

We are all Lv2 btw.

So here is where it gets tricky. The necromancer and I have decided to team up and retrieve the artifact for ourselves. He will gain great recognition and clout in his home nation of Geb and I will get enough coin to fund my private research project. But we don't want out fellow party members to know about this and simply think that, after we take the artifact, that the job has been completed.

So here is what I have so far and I would like your input from a GM or players perspective. Once we locate the Orb (we already have a good idea of where in the Manor it is) we were going to secretly slip the orb into a Bag of Holding. My thinking is that because it makes an extradementional space that doesn't actually exists in any dimension, the Paladin and Cleric in the group couldn't 'detect evil' or 'detect magic' to find the orb. At the same time, we were going to place a false orb in it's place and cast 'Magic Aura' on it to make it look evil. Now, as a GM, would that sound kosher to you?

My back-up plan was to sneak off and grab the orb, drink a potion of gaseous form, and float away to a courier waiting for the orb.

I know this is a lot, but any help I can get would be great. And if anything better comes to mind that I may have missed, please feel free to school me.

[Chuckwagon]

Btw, judging by the way our employers were acting, they have no idea the artifact is there. They really don't care what is causing it, so long as we kill the bad guys and stop them from coming back.

[Tirq]

As long as it fools the PCs...

[Chuckwagon]

I have no doubt we can get away with it as for as the PCs go, but I have concern about the GM ruling about the bag of holding thing. That's the main thing I would like to get an opinion on. But thanks for the feedback!

[Tiny Coffee Golem]

A bag of holding will prevent most detection from working through it, however it's a homebrew and an artifact. You may have to roll the dice.

Or

Get a lead lined box. A thin sheet of lead blocks most divinations. Bag of holding or no that'll get the job done.

[Chuckwagon]

Lead lined box...Awesome. Thanks!!!!!

[Chuckwagon]

I brought it up to the GM and he said the bag of holding would not work, but lead would work if the lead was thick enough. He simply said "a lot".