Dude, you just made a stealthy scout alpha-strike build with crap perception. You're going to be dead meat a long time before you hit tenth level. Any normal DM will kill you without trying, just because you're walking into combat encounters built for 4-5 people alone and blissfully unaware of your surroundings.
Then you aren't casting Dominate or any other concentration spell. Or any spell at all for that matter. Or attacking. Go for it.
If you are hidden behind a wall, no one can see you cast invisibility - there is no point in making it subtle.
You can't defeat a guard you haven't seen.
+4 perception with magical guidance for reroll a failed skill. Are you sure about that.
Spells including Invisibility has verbal component.
Dude. You aren't doing anywhere near all of what you are capable of doing all at once. Let alone all of the contradictory things you keep throwing into your build like using Pass Without Trace, invisibility, Dominate, Polymorph and Invisibility.
Your sorcerer doesn't. You posted your build, remember.
So your answer is a video game? You do realize that sit down games don't play like video games, right?
You are behind a wall, which means you are in a different room presumably. You don't need subtle spell to cast quietly. It's very easy to cast Invisibility before an encounter, everyone does it.
Read again. For Divination spells and Distand Dimention door.
