A little OOC:
[OOC: you forgot the +2 from combat sense dude (...)[/color]
I did drop it. But let's just avoid further confusion, and re-rolling and say i didn't. It's still in my favor so i won't argue.
If you check OOC, and watch Stryker's position, he shouldn't break LoS, because he lands behind the coach, opposite of the guard - who was by the door. The idea was to get out of
his LoS to dissappear in the next round with Invisibility.
I will roll anyway, if you wish:
Spellcasting(5)+Reaction(3) (8d6.hits(5)=2) Forgot about the -2 modifier, but that doesn't change anything.
As for the Powebolt, let's say i was hoping for a better situation, and with the guard on me I'd like to cut on the Drain. Normal damage i can Heal, so let's say i'll lower the DV to 8, which i can take without damage. Didn't know about the rule. If I did, I would do things differently.
There seems to be a slight confusion with the spirits, so i'll try to clarify it. Spirit 1 has Fear and 1 service. Spirit 2 has Movement and 2 services. Spirit 2 was assigned to Influence the guard to open door, and Spirit 1 was assigned to Fear the guard to take him out. So, Spirit 1 is gone, as he used up his only service.
Anyway, I'm adding the map fragment with my view on Stryker's position, but it's still up to you.

IC: Stryker clenched his teeth, trying to keep out of the troll's sight, and don't loose his target. He felt the spell roar with power, and had to let it loose a big portion of it's might, as he can't really afford to get hurt now. Damn you, Murphy... He had only a moment of time to send Brick an update. "
Trouble. Stay low." He feels the spell he somehow didn't manage to drop fueling itself through his body, numbing his mind. He's in trouble. But he's used to it by now. And he's not going to let his vengeance go...