"I know," Strange simply responds, as he looks up at the Ringmaster. He knows just how dangerous it is, and just how badly things could go if he's caught in between two exceedingly powerful magical beings. "But I've got to make certain she wins. I've thought of worst last hurrahs for my dumb decisions."

If he gets out of here in one piece, he'll most likely have Ignatius's contract revoked. With the Starlight's protection blocking Nightshade's contract and Strange confident that he'll find a way to break his own curse, he's almost home-free and can return to Arabella without the threat of the fae hanging over his head. But he can't return to Arabella if he's dead or still stuck inside a stupid Mirror.

(Granted, everybody knows that the likelihood that Strange will do something dangerous again is pretty high. But let Jonathan 'still doesn't really know himself' Strange at least entertain the option that he's going to settle down and not do dumb shit when all the curses are off him.)

"Besides, when has something being dangerous ever stopped me?" It's said with a small laugh, something that's Strange deliberately trying to convey to Tyki that see! Everything's fine!