Yay

Well, in that case, i can go for the
traditional representation of a Hand of Glory - of course, with modern magical research and computing, it's no longer necessary to use the hand of a murderer, or to ignite the hand at all if you instead use proper electrical circuitry.
Preparing three Improved Invisibility Contact-Preparations, Force 4:
Alchemy 6 + Firebringer 2 + Magic 5 (limit force 4) vs. Force 4. Drain Resistance Logic 7 + Willpower 5=12. Drain=Force 4-1, +1 Contact Trigger
5 successes vs 2 successes = Potency 2, Force 4
4 successes vs 1 success = Potency 3, Force 4
3 successes vs 0 successes = Potency 3, Force 4
Drain Resistance: 5, 1, 4 Successes. Take 3 stun damage.
Oh, and since it's been pointed out that a Physical Mask spell that only lasts a few minutes, i'd like to swap my preparation for it out.
Either for an armor preparation.
Or make it a spell instead of a preparation, so that it can be maintained as long as needed.
I'd definitely have liked to have it as a preparation because it'd be stylish (use makeup to magically conceal your appearance), but within the shadowrun ruleset it's not really useful.
If swapping it is not okay, *shrugs* i can live with that.