The most subtle signal I could think of was the plume of smoke obfuscated as "trying to cover our retreat". Orochimaru is just too perceptive not to notice everything we try, so our only chance to hide what we're doing is to give him another explanation for our actions.
Do you refer to my plan with that? Because AoMythology explicitly stated that our plans need to include "what if we can't avoid a fight" contingencies.
That's why my plan focuses on retreating, but also has thoughts on how to deal with the clones he's probably going to send after us.
That would be nice, yes, but any signal we send out would be immediately noticed by Orochimaru, and with Intelligence EX he'd know that there has to be another kage-level ninja around, and he'd stop delaying.
He is here specifically for Karin because he needs an Uzumaki (see the note in the character sheet) and would see us as a superior substitute.
My personal analysis of the situation is that he would be content to let us both develop for a few years to see our potential (there's about 40 Uchiha and 3 Uzumaki to choose from and we don't even have the MS yet), so he won't try
too hard to mark us as long as we don't reveal any unique capabilities, like magecraft.
Of course, "not too hard" is still far beyond our level. I'd give us a 20% chance to escape without his mark.
Omakes to get a luck boost would be really helpful in the current situation...
Not sure whether I'll have the time to contribute one since I'm a pretty slow writer when it comes to prose, but I'll try.
@AoMythology, would an omake from Orochimaru's perspective be okay or interfere with what you're planning?
Would be great if I'm not the only one trying, tough.
Not only would Orochimaru be guaranteed to notice, Jiraiya has no reason to trust Karin which would cost us valuable time to resolve.